72486021 has 8 divisors (see below), whose sum is σ = 96941344. Its totient is φ = 48177360.

The previous prime is 72486019. The next prime is 72486023. The reversal of 72486021 is 12068427.

It is an interprime number because it is at equal distance from previous prime (72486019) and next prime (72486023).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72486021 - 2¹ = 72486019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72486021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72486023) 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, 35506 + ... + 37491.

It is an arithmetic number, because the mean of its divisors is an integer number (12117668).

Almost surely, 2^72486021 is an apocalyptic number.

It is an amenable number.

72486021 is a deficient number, since it is larger than the sum of its proper divisors (24455323).

72486021 is a wasteful number, since it uses less digits than its factorization.

72486021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73331.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 72486021 is about 8513.8722682455. The cubic root of 72486021 is about 416.9507443734.

The spelling of 72486021 in words is "seventy-two million, four hundred eighty-six thousand, twenty-one".