52206720 has 64 divisors (see below), whose sum is σ = 166415040. Its totient is φ = 13921280.

The previous prime is 52206719. The next prime is 52206761. The reversal of 52206720 is 2760225.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×52206720² = 5451083226316800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11676 + ... + 15515.

It is an arithmetic number, because the mean of its divisors is an integer number (2600235).

Almost surely, 2^52206720 is an apocalyptic number.

It is an amenable number.

52206720 is an abundant number, since it is smaller than the sum of its proper divisors (114208320).

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

52206720 is a wasteful number, since it uses less digits than its factorization.

52206720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27213 (or 27201 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 52206720 is about 7225.4217869962. The cubic root of 52206720 is about 373.7450672906.

Adding to 52206720 its reverse (2760225), we get a palindrome (54966945).

The spelling of 52206720 in words is "fifty-two million, two hundred six thousand, seven hundred twenty".