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245142132 = 22320428511
BaseRepresentation
bin11101001110010…
…01001001110100
3122002021111210020
432213021021310
51000224022012
640154125140
76034450044
oct1647111164
9562244706
10245142132
11116415a04
126a1207b0
133ba31521
14247b3724
15167c4a8c
hexe9c9274

245142132 has 12 divisors (see below), whose sum is σ = 571998336. Its totient is φ = 81714040.

The previous prime is 245142113. The next prime is 245142169. The reversal of 245142132 is 231241542.

245142132 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×2451421323 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10214244 + ... + 10214267.

It is an arithmetic number, because the mean of its divisors is an integer number (47666528).

Almost surely, 2245142132 is an apocalyptic number.

It is an amenable number.

245142132 is an abundant number, since it is smaller than the sum of its proper divisors (326856204).

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

245142132 is a wasteful number, since it uses less digits than its factorization.

245142132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20428518 (or 20428516 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 245142132 is about 15657.0154244032. The cubic root of 245142132 is about 625.8534533640.

Adding to 245142132 its reverse (231241542), we get a palindrome (476383674).

The spelling of 245142132 in words is "two hundred forty-five million, one hundred forty-two thousand, one hundred thirty-two".

Divisors: 1 2 3 4 6 12 20428511 40857022 61285533 81714044 122571066 245142132