7621386972 has 24 divisors (see below), whose sum is σ = 17785990656. Its totient is φ = 2540068848.

The previous prime is 7621386923. The next prime is 7621386991. The reversal of 7621386972 is 2796831267.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37653 + ... + 129075.

It is an arithmetic number, because the mean of its divisors is an integer number (741082944).

Almost surely, 2^7621386972 is an apocalyptic number.

It is an amenable number.

7621386972 is an abundant number, since it is smaller than the sum of its proper divisors (10164603684).

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

7621386972 is a wasteful number, since it uses less digits than its factorization.

7621386972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98377 (or 98375 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 51.

The square root of 7621386972 is about 87300.5553934223. Note that the first 3 decimals coincide. The cubic root of 7621386972 is about 1967.9376643039.

The spelling of 7621386972 in words is "seven billion, six hundred twenty-one million, three hundred eighty-six thousand, nine hundred seventy-two".