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30823485 = 3571126687
BaseRepresentation
bin111010110010…
…1010000111101
32010222222212120
41311211100331
530342322420
63020353153
7522665250
oct165452075
963888776
1030823485
1116443160
12a3a57b9
136502a64
144145097
152a8cd40
hex1d6543d

30823485 has 32 divisors (see below), whose sum is σ = 61489152. Its totient is φ = 12809280.

The previous prime is 30823439. The next prime is 30823489. The reversal of 30823485 is 58432803.

It is not a de Polignac number, because 30823485 - 26 = 30823421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30823489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12189 + ... + 14498.

It is an arithmetic number, because the mean of its divisors is an integer number (1921536).

Almost surely, 230823485 is an apocalyptic number.

30823485 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30823485 is a deficient number, since it is larger than the sum of its proper divisors (30665667).

30823485 is a wasteful number, since it uses less digits than its factorization.

30823485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26713.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 30823485 is about 5551.8902186553. The cubic root of 30823485 is about 313.5406925549.

The spelling of 30823485 in words is "thirty million, eight hundred twenty-three thousand, four hundred eighty-five".

Divisors: 1 3 5 7 11 15 21 33 35 55 77 105 165 231 385 1155 26687 80061 133435 186809 293557 400305 560427 880671 934045 1467785 2054899 2802135 4403355 6164697 10274495 30823485