72099434 has 32 divisors (see below), whose sum is σ = 124571520. Its totient is φ = 30976000.

The previous prime is 72099427. The next prime is 72099463. The reversal of 72099434 is 43499027.

It is a Curzon number.

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 in 15 ways as a sum of consecutive naturals, for example, 44234 + ... + 45834.

It is an arithmetic number, because the mean of its divisors is an integer number (3892860).

Almost surely, 2^72099434 is an apocalyptic number.

72099434 is a deficient number, since it is larger than the sum of its proper divisors (52472086).

72099434 is a wasteful number, since it uses less digits than its factorization.

72099434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 72099434 is about 8491.1385573432. The cubic root of 72099434 is about 416.2081867536.

The spelling of 72099434 in words is "seventy-two million, ninety-nine thousand, four hundred thirty-four".