23520146 has 32 divisors (see below), whose sum is σ = 40642560. Its totient is φ = 10112256.

The previous prime is 23520137. The next prime is 23520169. The reversal of 23520146 is 64102532.

It is a super-2 number, since 2×23520146² = 1106394535722632, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 55925 + ... + 56343.

It is an arithmetic number, because the mean of its divisors is an integer number (1270080).

Almost surely, 2^23520146 is an apocalyptic number.

23520146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

23520146 is a deficient number, since it is larger than the sum of its proper divisors (17122414).

23520146 is a wasteful number, since it uses less digits than its factorization.

23520146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23520146 is about 4849.7573135158. The cubic root of 23520146 is about 286.5145431085.

Adding to 23520146 its reverse (64102532), we get a palindrome (87622678).

The spelling of 23520146 in words is "twenty-three million, five hundred twenty thousand, one hundred forty-six".