23330540 has 12 divisors (see below), whose sum is σ = 48994176. Its totient is φ = 9332208.

The previous prime is 23330521. The next prime is 23330551. The reversal of 23330540 is 4503332.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1166527 = 23330540 / (2 + 3 + 3 + 3 + 0 + 5 + 4 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583244 + ... + 583283.

It is an arithmetic number, because the mean of its divisors is an integer number (4082848).

Almost surely, 2^23330540 is an apocalyptic number.

23330540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23330540 is an abundant number, since it is smaller than the sum of its proper divisors (25663636).

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

23330540 is a wasteful number, since it uses less digits than its factorization.

23330540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166536 (or 1166534 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 23330540 is about 4830.1697692731. The cubic root of 23330540 is about 285.7425593449.

Adding to 23330540 its reverse (4503332), we get a palindrome (27833872).

The spelling of 23330540 in words is "twenty-three million, three hundred thirty thousand, five hundred forty".