72281363 has 16 divisors (see below), whose sum is σ = 90326016. Its totient is φ = 56192640.

The previous prime is 72281359. The next prime is 72281371. The reversal of 72281363 is 36318227.

It is a happy number.

It is not a de Polignac number, because 72281363 - 2² = 72281359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72281353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44870 + ... + 46452.

It is an arithmetic number, because the mean of its divisors is an integer number (5645376).

Almost surely, 2^72281363 is an apocalyptic number.

72281363 is a deficient number, since it is larger than the sum of its proper divisors (18044653).

72281363 is a wasteful number, since it uses less digits than its factorization.

72281363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194.

The product of its digits is 12096, while the sum is 32.

The square root of 72281363 is about 8501.8446821852. The cubic root of 72281363 is about 416.5579663824.

The spelling of 72281363 in words is "seventy-two million, two hundred eighty-one thousand, three hundred sixty-three".