72989628 has 24 divisors (see below), whose sum is σ = 171059280. Its totient is φ = 24222720.

The previous prime is 72989597. The next prime is 72989629. The reversal of 72989628 is 82698927.

It is a happy number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72989629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10533 + ... + 16028.

It is an arithmetic number, because the mean of its divisors is an integer number (7127470).

Almost surely, 2^72989628 is an apocalyptic number.

It is an amenable number.

72989628 is an abundant number, since it is smaller than the sum of its proper divisors (98069652).

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

72989628 is a wasteful number, since it uses less digits than its factorization.

72989628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26797 (or 26795 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 72989628 is about 8543.3967483665. The cubic root of 72989628 is about 417.9141250448.

The spelling of 72989628 in words is "seventy-two million, nine hundred eighty-nine thousand, six hundred twenty-eight".