20532478 has 24 divisors (see below), whose sum is σ = 32685120. Its totient is φ = 9662400.

The previous prime is 20532461. The next prime is 20532511. The reversal of 20532478 is 87423502.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230658 + ... + 230746.

It is an arithmetic number, because the mean of its divisors is an integer number (1361880).

Almost surely, 2^20532478 is an apocalyptic number.

20532478 is a deficient number, since it is larger than the sum of its proper divisors (12152642).

20532478 is an equidigital number, since it uses as much as digits as its factorization.

20532478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 20532478 is about 4531.2777447426. The cubic root of 20532478 is about 273.8296399578.

The spelling of 20532478 in words is "twenty million, five hundred thirty-two thousand, four hundred seventy-eight".