72806514 has 16 divisors (see below), whose sum is σ = 158850720. Its totient is φ = 22062560.

The previous prime is 72806509. The next prime is 72806519. The reversal of 72806514 is 41560827.

It is an interprime number because it is at equal distance from previous prime (72806509) and next prime (72806519).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72806519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551499 + ... + 551630.

It is an arithmetic number, because the mean of its divisors is an integer number (9928170).

Almost surely, 2^72806514 is an apocalyptic number.

72806514 is an abundant number, since it is smaller than the sum of its proper divisors (86044206).

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

72806514 is a wasteful number, since it uses less digits than its factorization.

72806514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103145.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 72806514 is about 8532.6733208298. The cubic root of 72806514 is about 417.5643492672.

The spelling of 72806514 in words is "seventy-two million, eight hundred six thousand, five hundred fourteen".