72377552 has 20 divisors (see below), whose sum is σ = 151018980. Its totient is φ = 33404928.

The previous prime is 72377531. The next prime is 72377561. The reversal of 72377552 is 25577327.

It can be written as a sum of positive squares in 2 ways, for example, as 12222016 + 60155536 = 3496^2 + 7756^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173777 + ... + 174192.

It is an arithmetic number, because the mean of its divisors is an integer number (7550949).

Almost surely, 2^72377552 is an apocalyptic number.

It is an amenable number.

72377552 is an abundant number, since it is smaller than the sum of its proper divisors (78641428).

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

72377552 is a wasteful number, since it uses less digits than its factorization.

72377552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347990 (or 347984 counting only the distinct ones).

The product of its digits is 102900, while the sum is 38.

The square root of 72377552 is about 8507.4997502204. The cubic root of 72377552 is about 416.7426637556.

The spelling of 72377552 in words is "seventy-two million, three hundred seventy-seven thousand, five hundred fifty-two".