23689290 has 32 divisors (see below), whose sum is σ = 57125376. Its totient is φ = 6287040.

The previous prime is 23689283. The next prime is 23689291. The reversal of 23689290 is 9298632.

It is a super-2 number, since 2×23689290² = 1122364921408200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23689291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4920 + ... + 8460.

It is an arithmetic number, because the mean of its divisors is an integer number (1785168).

Almost surely, 2^23689290 is an apocalyptic number.

23689290 is an abundant number, since it is smaller than the sum of its proper divisors (33436086).

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

23689290 is a wasteful number, since it uses less digits than its factorization.

23689290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3774.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 23689290 is about 4867.1644722569. The cubic root of 23689290 is about 287.1997217715.

The spelling of 23689290 in words is "twenty-three million, six hundred eighty-nine thousand, two hundred ninety".