72154706 has 8 divisors (see below), whose sum is σ = 116557644. Its totient is φ = 33302160.

The previous prime is 72154661. The next prime is 72154717. The reversal of 72154706 is 60745127.

It can be written as a sum of positive squares in 2 ways, for example, as 69039481 + 3115225 = 8309^2 + 1765^2 .

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

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, 1387565 + ... + 1387616.

Almost surely, 2^72154706 is an apocalyptic number.

72154706 is a deficient number, since it is larger than the sum of its proper divisors (44402938).

72154706 is a wasteful number, since it uses less digits than its factorization.

72154706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775196.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 72154706 is about 8494.3926210177. The cubic root of 72154706 is about 416.3145157570.

The spelling of 72154706 in words is "seventy-two million, one hundred fifty-four thousand, seven hundred six".