23427690 has 128 divisors (see below), whose sum is σ = 68124672. Its totient is φ = 5080320.

The previous prime is 23427641. The next prime is 23427707. The reversal of 23427690 is 9672432.

It is a super-2 number, since 2×23427690² = 1097713317472200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 184407 + ... + 184533.

It is an arithmetic number, because the mean of its divisors is an integer number (532224).

Almost surely, 2^23427690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23427690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34062336).

23427690 is an abundant number, since it is smaller than the sum of its proper divisors (44696982).

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

23427690 is a wasteful number, since it uses less digits than its factorization.

23427690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 23427690 is about 4840.2159042753. The cubic root of 23427690 is about 286.1386274336.

The spelling of 23427690 in words is "twenty-three million, four hundred twenty-seven thousand, six hundred ninety".