72540862 has 4 divisors (see below), whose sum is σ = 108811296. Its totient is φ = 36270430.

The previous prime is 72540859. The next prime is 72540869. The reversal of 72540862 is 26804527.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72540869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18135214 + ... + 18135217.

It is an arithmetic number, because the mean of its divisors is an integer number (27202824).

Almost surely, 2^72540862 is an apocalyptic number.

72540862 is a deficient number, since it is larger than the sum of its proper divisors (36270434).

72540862 is a wasteful number, since it uses less digits than its factorization.

72540862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36270433.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 72540862 is about 8517.0923442217. The cubic root of 72540862 is about 417.0558691560.

The spelling of 72540862 in words is "seventy-two million, five hundred forty thousand, eight hundred sixty-two".