72013446 has 12 divisors (see below), whose sum is σ = 156029172. Its totient is φ = 24004476.

The previous prime is 72013429. The next prime is 72013463. The reversal of 72013446 is 64431027.

It is an interprime number because it is at equal distance from previous prime (72013429) and next prime (72013463).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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 5 ways as a sum of consecutive naturals, for example, 2000356 + ... + 2000391.

It is an arithmetic number, because the mean of its divisors is an integer number (13002431).

Almost surely, 2^72013446 is an apocalyptic number.

72013446 is an abundant number, since it is smaller than the sum of its proper divisors (84015726).

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

72013446 is a wasteful number, since it uses less digits than its factorization.

72013446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000755 (or 4000752 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 72013446 is about 8486.0736503992. The cubic root of 72013446 is about 416.0426600421.

The spelling of 72013446 in words is "seventy-two million, thirteen thousand, four hundred forty-six".