8158972 has 6 divisors (see below), whose sum is σ = 14278208. Its totient is φ = 4079484.

The previous prime is 8158967. The next prime is 8158987. The reversal of 8158972 is 2798518.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1019868 + ... + 1019875.

Almost surely, 2^8158972 is an apocalyptic number.

It is an amenable number.

8158972 is a deficient number, since it is larger than the sum of its proper divisors (6119236).

8158972 is a wasteful number, since it uses less digits than its factorization.

8158972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039747 (or 2039745 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The square root of 8158972 is about 2856.3914297589. The cubic root of 8158972 is about 201.3160872421.

The spelling of 8158972 in words is "eight million, one hundred fifty-eight thousand, nine hundred seventy-two".