72705274 has 8 divisors (see below), whose sum is σ = 109095840. Its totient is φ = 36339996.

The previous prime is 72705263. The next prime is 72705293. The reversal of 72705274 is 47250727.

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

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, 4737 + ... + 12955.

It is an arithmetic number, because the mean of its divisors is an integer number (13636980).

Almost surely, 2^72705274 is an apocalyptic number.

72705274 is a deficient number, since it is larger than the sum of its proper divisors (36390566).

72705274 is a wasteful number, since it uses less digits than its factorization.

72705274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12644.

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 72705274 is about 8526.7387669613. The cubic root of 72705274 is about 417.3707135509.

It can be divided in two parts, 7270 and 5274, that added together give a square (12544 = 112²).

The spelling of 72705274 in words is "seventy-two million, seven hundred five thousand, two hundred seventy-four".