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23015480 = 2353715551
BaseRepresentation
bin101011111001…
…1000000111000
31121022022022012
41113303000320
521342443410
62141145052
7366425345
oct127630070
947268265
1023015480
1111a9a964
12785b188
1349cab37
1430b17cc
152049605
hex15f3038

23015480 has 32 divisors (see below), whose sum is σ = 53187840. Its totient is φ = 8956800.

The previous prime is 23015429. The next prime is 23015491. The reversal of 23015480 is 8451032.

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, 6296 + ... + 9255.

It is an arithmetic number, because the mean of its divisors is an integer number (1662120).

Almost surely, 223015480 is an apocalyptic number.

23015480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23015480 is an abundant number, since it is smaller than the sum of its proper divisors (30172360).

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

23015480 is a wasteful number, since it uses less digits than its factorization.

23015480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15599 (or 15595 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 23015480 is about 4797.4451534124. The cubic root of 23015480 is about 284.4504852142.

The spelling of 23015480 in words is "twenty-three million, fifteen thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 37 40 74 148 185 296 370 740 1480 15551 31102 62204 77755 124408 155510 311020 575387 622040 1150774 2301548 2876935 4603096 5753870 11507740 23015480