20562630 has 32 divisors (see below), whose sum is σ = 53837568. Its totient is φ = 4984800.

The previous prime is 20562623. The next prime is 20562631. The reversal of 20562630 is 3626502.

It is a self number, because there is not a number n which added to its sum of digits gives 20562630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20562631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30826 + ... + 31485.

It is an arithmetic number, because the mean of its divisors is an integer number (1682424).

Almost surely, 2^20562630 is an apocalyptic number.

20562630 is an abundant number, since it is smaller than the sum of its proper divisors (33274938).

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

20562630 is a wasteful number, since it uses less digits than its factorization.

20562630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62332.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20562630 is about 4534.6036210456. The cubic root of 20562630 is about 273.9636142566.

It can be divided in two parts, 205 and 62630, that added together give a triangular number (62835 = T₃₅₄).

The spelling of 20562630 in words is "twenty million, five hundred sixty-two thousand, six hundred thirty".