73220036 has 6 divisors (see below), whose sum is σ = 128135070. Its totient is φ = 36610016.

The previous prime is 73220029. The next prime is 73220039. The reversal of 73220036 is 63002237.

It can be written as a sum of positive squares in only one way, i.e., 71503936 + 1716100 = 8456^2 + 1310^2 .

It is a super-2 number, since 2×73220036² = 10722347343682592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73219993 and 73220020.

It is not an unprimeable number, because it can be changed into a prime (73220039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9152501 + ... + 9152508.

It is an arithmetic number, because the mean of its divisors is an integer number (21355845).

Almost surely, 2^73220036 is an apocalyptic number.

It is an amenable number.

73220036 is a deficient number, since it is larger than the sum of its proper divisors (54915034).

73220036 is a wasteful number, since it uses less digits than its factorization.

73220036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18305013 (or 18305011 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 73220036 is about 8556.8706896856. The cubic root of 73220036 is about 418.3534094409.

The spelling of 73220036 in words is "seventy-three million, two hundred twenty thousand, thirty-six".