72153816 has 32 divisors (see below), whose sum is σ = 206154240. Its totient is φ = 20615328.

The previous prime is 72153803. The next prime is 72153817. The reversal of 72153816 is 61835127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72153817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214576 + ... + 214911.

It is an arithmetic number, because the mean of its divisors is an integer number (6442320).

Almost surely, 2^72153816 is an apocalyptic number.

It is an amenable number.

72153816 is an abundant number, since it is smaller than the sum of its proper divisors (134000424).

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

72153816 is a wasteful number, since it uses less digits than its factorization.

72153816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429503 (or 429499 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 72153816 is about 8494.3402333554. The cubic root of 72153816 is about 416.3128040579.

The spelling of 72153816 in words is "seventy-two million, one hundred fifty-three thousand, eight hundred sixteen".