72479145 has 16 divisors (see below), whose sum is σ = 117556992. Its totient is φ = 38125440.

The previous prime is 72479131. The next prime is 72479153. The reversal of 72479145 is 54197427.

It is not a de Polignac number, because 72479145 - 2¹² = 72475049 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32001 + ... + 34190.

It is an arithmetic number, because the mean of its divisors is an integer number (7347312).

Almost surely, 2^72479145 is an apocalyptic number.

It is an amenable number.

72479145 is a deficient number, since it is larger than the sum of its proper divisors (45077847).

72479145 is a wasteful number, since it uses less digits than its factorization.

72479145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66272.

The product of its digits is 70560, while the sum is 39.

The square root of 72479145 is about 8513.4684471137. The cubic root of 72479145 is about 416.9375600199.

The spelling of 72479145 in words is "seventy-two million, four hundred seventy-nine thousand, one hundred forty-five".