73220355 has 40 divisors (see below), whose sum is σ = 141360912. Its totient is φ = 36044352.

The previous prime is 73220351. The next prime is 73220393. The reversal of 73220355 is 55302237.

It is not a de Polignac number, because 73220355 - 2² = 73220351 is a prime.

It is a super-2 number, since 2×73220355² = 10722440772652050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (73220351) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1689 + ... + 12218.

Almost surely, 2^73220355 is an apocalyptic number.

73220355 is a deficient number, since it is larger than the sum of its proper divisors (68140557).

73220355 is a wasteful number, since it uses less digits than its factorization.

73220355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13937 (or 13928 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 73220355 is about 8556.8893296571. The cubic root of 73220355 is about 418.3540169911.

The spelling of 73220355 in words is "seventy-three million, two hundred twenty thousand, three hundred fifty-five".