72099436 has 6 divisors (see below), whose sum is σ = 126174020. Its totient is φ = 36049716.

The previous prime is 72099427. The next prime is 72099463. The reversal of 72099436 is 63499027.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9012426 + ... + 9012433.

Almost surely, 2^72099436 is an apocalyptic number.

It is an amenable number.

72099436 is a deficient number, since it is larger than the sum of its proper divisors (54074584).

72099436 is a wasteful number, since it uses less digits than its factorization.

72099436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18024863 (or 18024861 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 72099436 is about 8491.1386751130. The cubic root of 72099436 is about 416.2081906021.

The spelling of 72099436 in words is "seventy-two million, ninety-nine thousand, four hundred thirty-six".