72151518 has 8 divisors (see below), whose sum is σ = 144303048. Its totient is φ = 24050504.

The previous prime is 72151501. The next prime is 72151523. The reversal of 72151518 is 81515127.

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

72151518 is an admirable number.

It is a Curzon number.

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, 6012621 + ... + 6012632.

It is an arithmetic number, because the mean of its divisors is an integer number (18037881).

Almost surely, 2^72151518 is an apocalyptic number.

72151518 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.

72151518 is a wasteful number, since it uses less digits than its factorization.

72151518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12025258.

The product of its digits is 2800, while the sum is 30.

The square root of 72151518 is about 8494.2049657399. The cubic root of 72151518 is about 416.3083843472.

The spelling of 72151518 in words is "seventy-two million, one hundred fifty-one thousand, five hundred eighteen".