73878831 has 16 divisors (see below), whose sum is σ = 117869920. Its totient is φ = 45463680.

The previous prime is 73878803. The next prime is 73878839. The reversal of 73878831 is 13887837.

It is not a de Polignac number, because 73878831 - 2⁵ = 73878799 is a prime.

It is a super-2 number, since 2×73878831² = 10916163339853122, 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 (73878839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104890 + ... + 105591.

It is an arithmetic number, because the mean of its divisors is an integer number (7366870).

Almost surely, 2^73878831 is an apocalyptic number.

73878831 is a deficient number, since it is larger than the sum of its proper divisors (43991089).

73878831 is a wasteful number, since it uses less digits than its factorization.

73878831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210503 (or 210497 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 73878831 is about 8595.2795766048. The cubic root of 73878831 is about 419.6043723454.

The spelling of 73878831 in words is "seventy-three million, eight hundred seventy-eight thousand, eight hundred thirty-one".