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245206528 = 297312207
BaseRepresentation
bin11101001110110…
…00111000000000
3122002101210010021
432213120320000
51000233102103
640155343224
76035135560
oct1647307000
9562353107
10245206528
1111645a326
126a151b14
133ba54928
14247ccda0
15167d8bbd
hexe9d8e00

245206528 has 80 divisors (see below), whose sum is σ = 578248704. Its totient is φ = 101652480.

The previous prime is 245206517. The next prime is 245206531. The reversal of 245206528 is 825602542.

It is a junction number, because it is equal to n+sod(n) for n = 245206493 and 245206502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110001 + ... + 112207.

Almost surely, 2245206528 is an apocalyptic number.

245206528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245206528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289124352).

245206528 is an abundant number, since it is smaller than the sum of its proper divisors (333042176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245206528 is an equidigital number, since it uses as much as digits as its factorization.

245206528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263 (or 2247 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 245206528 is about 15659.0717477123. The cubic root of 245206528 is about 625.9082500516.

The spelling of 245206528 in words is "two hundred forty-five million, two hundred six thousand, five hundred twenty-eight".

Divisors: 1 2 4 7 8 14 16 28 31 32 56 62 64 112 124 128 217 224 248 256 434 448 496 512 868 896 992 1736 1792 1984 2207 3472 3584 3968 4414 6944 7936 8828 13888 15449 15872 17656 27776 30898 35312 55552 61796 68417 70624 111104 123592 136834 141248 247184 273668 282496 478919 494368 547336 564992 957838 988736 1094672 1129984 1915676 1977472 2189344 3831352 3954944 4378688 7662704 7909888 8757376 15325408 17514752 30650816 35029504 61301632 122603264 245206528