72972402 has 8 divisors (see below), whose sum is σ = 145944816. Its totient is φ = 24324132.

The previous prime is 72972401. The next prime is 72972413. The reversal of 72972402 is 20427927.

It is a sphenic number, since it is the product of 3 distinct primes.

72972402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (72972401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6081028 + ... + 6081039.

It is an arithmetic number, because the mean of its divisors is an integer number (18243102).

Almost surely, 2^72972402 is an apocalyptic number.

72972402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72972402 is a wasteful number, since it uses less digits than its factorization.

72972402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12162072.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 72972402 is about 8542.3885418541. The cubic root of 72972402 is about 417.8812456923.

The spelling of 72972402 in words is "seventy-two million, nine hundred seventy-two thousand, four hundred two".