72929292 has 12 divisors (see below), whose sum is σ = 170168376. Its totient is φ = 24309760.

The previous prime is 72929281. The next prime is 72929309. The reversal of 72929292 is 29292927.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3038709 + ... + 3038732.

It is an arithmetic number, because the mean of its divisors is an integer number (14180698).

Almost surely, 2^72929292 is an apocalyptic number.

It is an amenable number.

72929292 is an abundant number, since it is smaller than the sum of its proper divisors (97239084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72929292 is a wasteful number, since it uses less digits than its factorization.

72929292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6077448 (or 6077446 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 72929292 is about 8539.8648701253. The cubic root of 72929292 is about 417.7989387346.

The spelling of 72929292 in words is "seventy-two million, nine hundred twenty-nine thousand, two hundred ninety-two".