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23073725 = 525571657
BaseRepresentation
bin101100000000…
…1001110111101
31121102021012102
41120001032331
521401324400
62142314445
7400060223
oct130011675
947367172
1023073725
111202a6a4
127888a25
134a1b4bc
1430c8b13
15205b9d5
hex16013bd

23073725 has 12 divisors (see below), whose sum is σ = 28680084. Its totient is φ = 18414720.

The previous prime is 23073719. The next prime is 23073727. The reversal of 23073725 is 52737032.

It can be written as a sum of positive squares in 6 ways, for example, as 4866436 + 18207289 = 2206^2 + 4267^2 .

It is not a de Polignac number, because 23073725 - 28 = 23073469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23073727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13097 + ... + 14753.

It is an arithmetic number, because the mean of its divisors is an integer number (2390007).

Almost surely, 223073725 is an apocalyptic number.

23073725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23073725 is a deficient number, since it is larger than the sum of its proper divisors (5606359).

23073725 is a wasteful number, since it uses less digits than its factorization.

23073725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224 (or 2219 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 23073725 is about 4803.5117362197. The cubic root of 23073725 is about 284.6902348977.

The spelling of 23073725 in words is "twenty-three million, seventy-three thousand, seven hundred twenty-five".

Divisors: 1 5 25 557 1657 2785 8285 13925 41425 922949 4614745 23073725