72887388 has 48 divisors (see below), whose sum is σ = 195197184. Its totient is φ = 20736000.

The previous prime is 72887369. The next prime is 72887431. The reversal of 72887388 is 88378827.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 72887388.

It is a congruent number.

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, 19356 + ... + 22812.

It is an arithmetic number, because the mean of its divisors is an integer number (4066608).

Almost surely, 2^72887388 is an apocalyptic number.

It is an amenable number.

72887388 is an abundant number, since it is smaller than the sum of its proper divisors (122309796).

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

72887388 is a wasteful number, since it uses less digits than its factorization.

72887388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722 (or 3720 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 51.

The square root of 72887388 is about 8537.4110829923. The cubic root of 72887388 is about 417.7189032167.

The spelling of 72887388 in words is "seventy-two million, eight hundred eighty-seven thousand, three hundred eighty-eight".