72482509 has 24 divisors (see below), whose sum is σ = 85264704. Its totient is φ = 61353600.

The previous prime is 72482497. The next prime is 72482521. The reversal of 72482509 is 90528427.

It is an interprime number because it is at equal distance from previous prime (72482497) and next prime (72482521).

It is not a de Polignac number, because 72482509 - 2¹¹ = 72480461 is a prime.

It is a super-2 number, since 2×72482509² = 10507428221870162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72482609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 343414 + ... + 343624.

It is an arithmetic number, because the mean of its divisors is an integer number (3552696).

Almost surely, 2^72482509 is an apocalyptic number.

It is an amenable number.

72482509 is a deficient number, since it is larger than the sum of its proper divisors (12782195).

72482509 is a wasteful number, since it uses less digits than its factorization.

72482509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 72482509 is about 8513.6660141211. Note that the first 3 decimals coincide. The cubic root of 72482509 is about 416.9440104099.

The spelling of 72482509 in words is "seventy-two million, four hundred eighty-two thousand, five hundred nine".