23010440 has 16 divisors (see below), whose sum is σ = 51773580. Its totient is φ = 9204160.

The previous prime is 23010433. The next prime is 23010451. The reversal of 23010440 is 4401032.

It can be written as a sum of positive squares in 2 ways, for example, as 19377604 + 3632836 = 4402^2 + 1906^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287591 + ... + 287670.

Almost surely, 2^23010440 is an apocalyptic number.

23010440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23010440 is an abundant number, since it is smaller than the sum of its proper divisors (28763140).

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

23010440 is a wasteful number, since it uses less digits than its factorization.

23010440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575272 (or 575268 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 23010440 is about 4796.9198450672. The cubic root of 23010440 is about 284.4297204202.

Adding to 23010440 its reverse (4401032), we get a palindrome (27411472).

The spelling of 23010440 in words is "twenty-three million, ten thousand, four hundred forty".