23046640 has 40 divisors (see below), whose sum is σ = 55317888. Its totient is φ = 8920320.

The previous prime is 23046637. The next prime is 23046641. The reversal of 23046640 is 4664032.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×23046640² = 1062295230579200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23046641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167 + ... + 7126.

Almost surely, 2^23046640 is an apocalyptic number.

23046640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23046640 is an abundant number, since it is smaller than the sum of its proper divisors (32271248).

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

23046640 is a wasteful number, since it uses less digits than its factorization.

23046640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9337 (or 9331 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 23046640 is about 4800.6916168402. The cubic root of 23046640 is about 284.5787971174.

The spelling of 23046640 in words is "twenty-three million, forty-six thousand, six hundred forty".