72877245 has 16 divisors (see below), whose sum is σ = 133261440. Its totient is φ = 33315264.

The previous prime is 72877243. The next prime is 72877247. The reversal of 72877245 is 54277827.

It is an interprime number because it is at equal distance from previous prime (72877243) and next prime (72877247).

It is not a de Polignac number, because 72877245 - 2¹ = 72877243 is a prime.

It is a super-2 number, since 2×72877245² = 10622185677580050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72877197 and 72877206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72877243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346930 + ... + 347139.

It is an arithmetic number, because the mean of its divisors is an integer number (8328840).

Almost surely, 2^72877245 is an apocalyptic number.

It is an amenable number.

72877245 is a deficient number, since it is larger than the sum of its proper divisors (60384195).

72877245 is a wasteful number, since it uses less digits than its factorization.

72877245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694084.

The product of its digits is 219520, while the sum is 42.

The square root of 72877245 is about 8536.8170297834. The cubic root of 72877245 is about 417.6995257473.

The spelling of 72877245 in words is "seventy-two million, eight hundred seventy-seven thousand, two hundred forty-five".