72877831 has 8 divisors (see below), whose sum is σ = 78713600. Its totient is φ = 67074912.

The previous prime is 72877829. The next prime is 72877853. The reversal of 72877831 is 13877827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72877831 - 2¹ = 72877829 is a prime.

It is a super-2 number, since 2×72877831² = 10622356502529122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72877031) 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, 3495 + ... + 12568.

It is an arithmetic number, because the mean of its divisors is an integer number (9839200).

Almost surely, 2^72877831 is an apocalyptic number.

72877831 is a deficient number, since it is larger than the sum of its proper divisors (5835769).

72877831 is a wasteful number, since it uses less digits than its factorization.

72877831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16425.

The product of its digits is 131712, while the sum is 43.

The square root of 72877831 is about 8536.8513516401. The cubic root of 72877831 is about 417.7006453069.

The spelling of 72877831 in words is "seventy-two million, eight hundred seventy-seven thousand, eight hundred thirty-one".