23010640 has 40 divisors (see below), whose sum is σ = 53710848. Its totient is φ = 9168000.

The previous prime is 23010623. The next prime is 23010643. The reversal of 23010640 is 4601032.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23010643) 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, 30265 + ... + 31015.

Almost surely, 2^23010640 is an apocalyptic number.

23010640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23010640 is an abundant number, since it is smaller than the sum of its proper divisors (30700208).

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

23010640 is a wasteful number, since it uses less digits than its factorization.

23010640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 23010640 is about 4796.9406917326. The cubic root of 23010640 is about 284.4305444777.

Adding to 23010640 its reverse (4601032), we get a palindrome (27611672).

The spelling of 23010640 in words is "twenty-three million, ten thousand, six hundred forty".