72047586 has 16 divisors (see below), whose sum is σ = 155179584. Its totient is φ = 22168464.

The previous prime is 72047551. The next prime is 72047587. The reversal of 72047586 is 68574027.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72047587) 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, 461766 + ... + 461921.

It is an arithmetic number, because the mean of its divisors is an integer number (9698724).

Almost surely, 2^72047586 is an apocalyptic number.

72047586 is an abundant number, since it is smaller than the sum of its proper divisors (83131998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72047586 is a wasteful number, since it uses less digits than its factorization.

72047586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923705.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 72047586 is about 8488.0849430245. The cubic root of 72047586 is about 416.1083952311.

The spelling of 72047586 in words is "seventy-two million, forty-seven thousand, five hundred eighty-six".