1220577532 has 24 divisors (see below), whose sum is σ = 2188986800. Its totient is φ = 595195776.

The previous prime is 1220577529. The next prime is 1220577559. The reversal of 1220577532 is 2357750221.

It is a super-2 number, since 2×1220577532² = 2979619023246422048, which contains 22 as substring.

It is a congruent number.

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, 116944 + ... + 126952.

Almost surely, 2^1220577532 is an apocalyptic number.

It is an amenable number.

1220577532 is a deficient number, since it is larger than the sum of its proper divisors (968409268).

1220577532 is a wasteful number, since it uses less digits than its factorization.

1220577532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10765 (or 10763 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 1220577532 is about 34936.7647614944. The cubic root of 1220577532 is about 1068.6983128703.

The spelling of 1220577532 in words is "one billion, two hundred twenty million, five hundred seventy-seven thousand, five hundred thirty-two".