72915454 has 8 divisors (see below), whose sum is σ = 113144760. Its totient is φ = 35200536.

The previous prime is 72915443. The next prime is 72915461. The reversal of 72915454 is 45451927.

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

It is a super-2 number, since 2×72915454² = 10633326864052232, which contains 22 as substring.

It is a congruent number.

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, 628524 + ... + 628639.

It is an arithmetic number, because the mean of its divisors is an integer number (14143095).

Almost surely, 2^72915454 is an apocalyptic number.

72915454 is a deficient number, since it is larger than the sum of its proper divisors (40229306).

72915454 is a wasteful number, since it uses less digits than its factorization.

72915454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257194.

The product of its digits is 50400, while the sum is 37.

The square root of 72915454 is about 8539.0546315151. The cubic root of 72915454 is about 417.7725119164.

The spelling of 72915454 in words is "seventy-two million, nine hundred fifteen thousand, four hundred fifty-four".