72451064 has 32 divisors (see below), whose sum is σ = 158561280. Its totient is φ = 30388704.

The previous prime is 72451063. The next prime is 72451097. The reversal of 72451064 is 46015427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72451063) 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, 11132 + ... + 16395.

It is an arithmetic number, because the mean of its divisors is an integer number (4955040).

Almost surely, 2^72451064 is an apocalyptic number.

It is an amenable number.

72451064 is an abundant number, since it is smaller than the sum of its proper divisors (86110216).

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

72451064 is a wasteful number, since it uses less digits than its factorization.

72451064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27587 (or 27583 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 72451064 is about 8511.8190770246. The cubic root of 72451064 is about 416.8837075819.

The spelling of 72451064 in words is "seventy-two million, four hundred fifty-one thousand, sixty-four".