73072036 has 6 divisors (see below), whose sum is σ = 127876070. Its totient is φ = 36536016.

The previous prime is 73071997. The next prime is 73072057. The reversal of 73072036 is 63027037.

It can be written as a sum of positive squares in only one way, i.e., 72590400 + 481636 = 8520^2 + 694^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73071995 and 73072013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9134001 + ... + 9134008.

Almost surely, 2^73072036 is an apocalyptic number.

It is an amenable number.

73072036 is a deficient number, since it is larger than the sum of its proper divisors (54804034).

73072036 is a wasteful number, since it uses less digits than its factorization.

73072036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18268013 (or 18268011 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 73072036 is about 8548.2182938903. The cubic root of 73072036 is about 418.0713460781.

The spelling of 73072036 in words is "seventy-three million, seventy-two thousand, thirty-six".