72457086 has 64 divisors (see below), whose sum is σ = 162005760. Its totient is φ = 21461760.

The previous prime is 72457067. The next prime is 72457117. The reversal of 72457086 is 68075427.

It is a super-2 number, since 2×72457086² = 10500058623222792, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 444441 + ... + 444603.

It is an arithmetic number, because the mean of its divisors is an integer number (2531340).

Almost surely, 2^72457086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72457086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81002880).

72457086 is an abundant number, since it is smaller than the sum of its proper divisors (89548674).

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

72457086 is a wasteful number, since it uses less digits than its factorization.

72457086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361.

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

The square root of 72457086 is about 8512.1728130954. The cubic root of 72457086 is about 416.8952574658.

The spelling of 72457086 in words is "seventy-two million, four hundred fifty-seven thousand, eighty-six".