72806810 has 16 divisors (see below), whose sum is σ = 131997600. Its totient is φ = 28912656.

The previous prime is 72806779. The next prime is 72806813. The reversal of 72806810 is 1860827.

It is a super-2 number, since 2×72806810² = 10601663164752200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72806813) 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, 24800 + ... + 27579.

It is an arithmetic number, because the mean of its divisors is an integer number (8249850).

Almost surely, 2^72806810 is an apocalyptic number.

72806810 is a deficient number, since it is larger than the sum of its proper divisors (59190790).

72806810 is a wasteful number, since it uses less digits than its factorization.

72806810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52525.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 72806810 is about 8532.6906659037. The cubic root of 72806810 is about 417.5649151455.

The spelling of 72806810 in words is "seventy-two million, eight hundred six thousand, eight hundred ten".