23040028 has 12 divisors (see below), whose sum is σ = 43985592. Its totient is φ = 10472720.

The previous prime is 23040023. The next prime is 23040047. The reversal of 23040028 is 82004032.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23039987 and 23040014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23040023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261775 + ... + 261862.

It is an arithmetic number, because the mean of its divisors is an integer number (3665466).

Almost surely, 2^23040028 is an apocalyptic number.

It is an amenable number.

23040028 is a deficient number, since it is larger than the sum of its proper divisors (20945564).

23040028 is a wasteful number, since it uses less digits than its factorization.

23040028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523652 (or 523650 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 23040028 is about 4800.0029166658. The cubic root of 23040028 is about 284.5515796288.

The spelling of 23040028 in words is "twenty-three million, forty thousand, twenty-eight".