72165464 has 64 divisors (see below), whose sum is σ = 159129600. Its totient is φ = 30046464.

The previous prime is 72165463. The next prime is 72165487. The reversal of 72165464 is 46456127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72165463) 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, 519107 + ... + 519245.

It is an arithmetic number, because the mean of its divisors is an integer number (2486400).

Almost surely, 2^72165464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72165464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79564800).

72165464 is an abundant number, since it is smaller than the sum of its proper divisors (86964136).

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

72165464 is a wasteful number, since it uses less digits than its factorization.

72165464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 348 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 72165464 is about 8495.0258386894. The cubic root of 72165464 is about 416.3352050474.

The spelling of 72165464 in words is "seventy-two million, one hundred sixty-five thousand, four hundred sixty-four".