73220536 has 8 divisors (see below), whose sum is σ = 137288520. Its totient is φ = 36610264.

The previous prime is 73220491. The next prime is 73220551. The reversal of 73220536 is 63502237.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×73220536² = 10722493784254592, 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 as a sum of consecutive naturals, namely, 4576276 + ... + 4576291.

It is an arithmetic number, because the mean of its divisors is an integer number (17161065).

Almost surely, 2^73220536 is an apocalyptic number.

It is an amenable number.

73220536 is a deficient number, since it is larger than the sum of its proper divisors (64067984).

73220536 is a wasteful number, since it uses less digits than its factorization.

73220536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9152573 (or 9152569 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 73220536 is about 8556.8999059239. The cubic root of 73220536 is about 418.3543617132.

The spelling of 73220536 in words is "seventy-three million, two hundred twenty thousand, five hundred thirty-six".