72554740 has 12 divisors (see below), whose sum is σ = 152364996. Its totient is φ = 29021888.

The previous prime is 72554689. The next prime is 72554747. The reversal of 72554740 is 4745527.

It can be written as a sum of positive squares in 2 ways, for example, as 35928036 + 36626704 = 5994^2 + 6052^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72554696 and 72554705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72554747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1813849 + ... + 1813888.

It is an arithmetic number, because the mean of its divisors is an integer number (12697083).

Almost surely, 2^72554740 is an apocalyptic number.

It is an amenable number.

72554740 is an abundant number, since it is smaller than the sum of its proper divisors (79810256).

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

72554740 is a wasteful number, since it uses less digits than its factorization.

72554740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627746 (or 3627744 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 72554740 is about 8517.9070199199. The cubic root of 72554740 is about 417.0824635109.

The spelling of 72554740 in words is "seventy-two million, five hundred fifty-four thousand, seven hundred forty".