20632530 has 32 divisors (see below), whose sum is σ = 50575104. Its totient is φ = 5384576.

The previous prime is 20632523. The next prime is 20632567. The reversal of 20632530 is 3523602.

It is a junction number, because it is equal to n+sod(n) for n = 20632497 and 20632506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5907 + ... + 8726.

It is an arithmetic number, because the mean of its divisors is an integer number (1580472).

Almost surely, 2^20632530 is an apocalyptic number.

20632530 is an abundant number, since it is smaller than the sum of its proper divisors (29942574).

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

20632530 is a wasteful number, since it uses less digits than its factorization.

20632530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14690.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 20632530 is about 4542.3044812077. The cubic root of 20632530 is about 274.2736977778.

The spelling of 20632530 in words is "twenty million, six hundred thirty-two thousand, five hundred thirty".