23137408 has 128 divisors (see below), whose sum is σ = 58752000. Its totient is φ = 9031680.

The previous prime is 23137403. The next prime is 23137451. The reversal of 23137408 is 80473132.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (23137403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 746353 + ... + 746383.

It is an arithmetic number, because the mean of its divisors is an integer number (459000).

Almost surely, 2^23137408 is an apocalyptic number.

23137408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23137408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29376000).

23137408 is an abundant number, since it is smaller than the sum of its proper divisors (35614592).

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

23137408 is an equidigital number, since it uses as much as digits as its factorization.

23137408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 23137408 is about 4810.1359648143. The cubic root of 23137408 is about 284.9519073462.

The spelling of 23137408 in words is "twenty-three million, one hundred thirty-seven thousand, four hundred eight".