73220357 has 48 divisors (see below), whose sum is σ = 96307200. Its totient is φ = 55248480.

The previous prime is 73220351. The next prime is 73220393. The reversal of 73220357 is 75302237.

It is not a de Polignac number, because 73220357 - 2¹⁴ = 73203973 is a prime.

It is a super-2 number, since 2×73220357² = 10722441358414898, which contains 22 as substring.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 1240994 + ... + 1241052.

It is an arithmetic number, because the mean of its divisors is an integer number (2006400).

Almost surely, 2^73220357 is an apocalyptic number.

It is an amenable number.

73220357 is a deficient number, since it is larger than the sum of its proper divisors (23086843).

73220357 is a wasteful number, since it uses less digits than its factorization.

73220357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 73220357 is about 8556.8894465220. The cubic root of 73220357 is about 418.3540208002.

The spelling of 73220357 in words is "seventy-three million, two hundred twenty thousand, three hundred fifty-seven".