20220534 has 24 divisors (see below), whose sum is σ = 43917120. Its totient is φ = 6723888.

The previous prime is 20220517. The next prime is 20220581. The reversal of 20220534 is 43502202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

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, 8059 + ... + 10265.

It is an arithmetic number, because the mean of its divisors is an integer number (1829880).

Almost surely, 2^20220534 is an apocalyptic number.

20220534 is an abundant number, since it is smaller than the sum of its proper divisors (23696586).

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

20220534 is a wasteful number, since it uses less digits than its factorization.

20220534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724 (or 2721 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 20220534 is about 4496.7248081242. The cubic root of 20220534 is about 272.4358191301.

Adding to 20220534 its reverse (43502202), we get a palindrome (63722736).

It can be divided in two parts, 202 and 20534, that added together give a 4-th power (20736 = 12⁴).

The spelling of 20220534 in words is "twenty million, two hundred twenty thousand, five hundred thirty-four".