23053440 has 64 divisors (see below), whose sum is σ = 73488960. Its totient is φ = 6147072.

The previous prime is 23053423. The next prime is 23053493. The reversal of 23053440 is 4435032.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×23053440² = 1062922191667200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4084 + ... + 7923.

It is an arithmetic number, because the mean of its divisors is an integer number (1148265).

Almost surely, 2^23053440 is an apocalyptic number.

23053440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23053440 is an abundant number, since it is smaller than the sum of its proper divisors (50435520).

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

23053440 is a wasteful number, since it uses less digits than its factorization.

23053440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12029 (or 12017 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 23053440 is about 4801.3997958929. The cubic root of 23053440 is about 284.6067830556.

Adding to 23053440 its reverse (4435032), we get a palindrome (27488472).

The spelling of 23053440 in words is "twenty-three million, fifty-three thousand, four hundred forty".