72878463 has 12 divisors (see below), whose sum is σ = 120307408. Its totient is φ = 41644800.

The previous prime is 72878461. The next prime is 72878501. The reversal of 72878463 is 36487827.

It is a happy number.

It is not a de Polignac number, because 72878463 - 2¹ = 72878461 is a prime.

It is a super-2 number, since 2×72878463² = 10622540738484738, 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 (72878461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 578338 + ... + 578463.

Almost surely, 2^72878463 is an apocalyptic number.

72878463 is a deficient number, since it is larger than the sum of its proper divisors (47428945).

72878463 is a wasteful number, since it uses less digits than its factorization.

72878463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156814 (or 1156811 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 72878463 is about 8536.8883675494. Note that the first 3 decimals coincide. The cubic root of 72878463 is about 417.7018527434.

The spelling of 72878463 in words is "seventy-two million, eight hundred seventy-eight thousand, four hundred sixty-three".