973215988 has 12 divisors (see below), whose sum is σ = 1761856740. Its totient is φ = 469828352.

The previous prime is 973215977. The next prime is 973216001. The reversal of 973215988 is 889512379.

It can be written as a sum of positive squares in 2 ways, for example, as 349615204 + 623600784 = 18698^2 + 24972^2 .

It is a super-2 number, since 2×973215988² = 1894298718597632288, which contains 22 as substring.

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, 4194781 + ... + 4195012.

It is an arithmetic number, because the mean of its divisors is an integer number (146821395).

Almost surely, 2^973215988 is an apocalyptic number.

It is an amenable number.

973215988 is a deficient number, since it is larger than the sum of its proper divisors (788640752).

973215988 is a wasteful number, since it uses less digits than its factorization.

973215988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8389826 (or 8389824 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 52.

The square root of 973215988 is about 31196.4098575461. The cubic root of 973215988 is about 990.9910790669.

The spelling of 973215988 in words is "nine hundred seventy-three million, two hundred fifteen thousand, nine hundred eighty-eight".