20620534 has 16 divisors (see below), whose sum is σ = 33898320. Its totient is φ = 9329760.

The previous prime is 20620531. The next prime is 20620547. The reversal of 20620534 is 43502602.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20620531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2992 + ... + 7084.

It is an arithmetic number, because the mean of its divisors is an integer number (2118645).

Almost surely, 2^20620534 is an apocalyptic number.

20620534 is a deficient number, since it is larger than the sum of its proper divisors (13277786).

20620534 is a wasteful number, since it uses less digits than its factorization.

20620534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20620534 is about 4540.9838141090. The cubic root of 20620534 is about 274.2205321353.

The spelling of 20620534 in words is "twenty million, six hundred twenty thousand, five hundred thirty-four".