23440070 has 16 divisors (see below), whose sum is σ = 42333408. Its totient is φ = 9344640.

The previous prime is 23440063. The next prime is 23440073. The reversal of 23440070 is 7004432.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659 + ... + 6878.

It is an arithmetic number, because the mean of its divisors is an integer number (2645838).

Almost surely, 2^23440070 is an apocalyptic number.

23440070 is a deficient number, since it is larger than the sum of its proper divisors (18893338).

23440070 is a wasteful number, since it uses less digits than its factorization.

23440070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7855.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 23440070 is about 4841.4946039421. The cubic root of 23440070 is about 286.1890204004.

It can be divided in two parts, 234 and 40070, that added together give a palindrome (40304).

The spelling of 23440070 in words is "twenty-three million, four hundred forty thousand, seventy".