72755788 has 48 divisors (see below), whose sum is σ = 156352000. Its totient is φ = 29529360.

The previous prime is 72755777. The next prime is 72755833. The reversal of 72755788 is 88755727.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24673 + ... + 27463.

Almost surely, 2^72755788 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 72755788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78176000).

72755788 is an abundant number, since it is smaller than the sum of its proper divisors (83596212).

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

72755788 is a wasteful number, since it uses less digits than its factorization.

72755788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835 (or 2819 counting only the distinct ones).

The product of its digits is 1097600, while the sum is 49.

The square root of 72755788 is about 8529.7003464366. The cubic root of 72755788 is about 417.4673511228.

The spelling of 72755788 in words is "seventy-two million, seven hundred fifty-five thousand, seven hundred eighty-eight".