23417728 has 32 divisors (see below), whose sum is σ = 49113000. Its totient is φ = 11091456.

The previous prime is 23417711. The next prime is 23417731. The reversal of 23417728 is 82771432.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 23417693 and 23417702.

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, 2383 + ... + 7246.

Almost surely, 2^23417728 is an apocalyptic number.

It is an amenable number.

23417728 is an abundant number, since it is smaller than the sum of its proper divisors (25695272).

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

23417728 is an equidigital number, since it uses as much as digits as its factorization.

23417728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9662 (or 9650 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 23417728 is about 4839.1867085286. The cubic root of 23417728 is about 286.0980640783.

The spelling of 23417728 in words is "twenty-three million, four hundred seventeen thousand, seven hundred twenty-eight".