23490081 has 12 divisors (see below), whose sum is σ = 35187152. Its totient is φ = 15659892.

The previous prime is 23490067. The next prime is 23490091. The reversal of 23490081 is 18009432.

It is not a de Polignac number, because 23490081 - 2⁷ = 23489953 is a prime.

It is a super-2 number, since 2×23490081² = 1103567810773122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23490001) 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, 48091 + ... + 48576.

Almost surely, 2^23490081 is an apocalyptic number.

It is an amenable number.

23490081 is a deficient number, since it is larger than the sum of its proper divisors (11697071).

23490081 is an frugal number, since it uses more digits than its factorization.

23490081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96682 (or 96670 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 23490081 is about 4846.6566827041. The cubic root of 23490081 is about 286.3924104667.

The spelling of 23490081 in words is "twenty-three million, four hundred ninety thousand, eighty-one".