80513810 has 32 divisors (see below), whose sum is σ = 156930480. Its totient is φ = 29564928.

The previous prime is 80513767. The next prime is 80513821. The reversal of 80513810 is 1831508.

It can be written as a sum of positive squares in 8 ways, for example, as 13126129 + 67387681 = 3623^2 + 8209^2 .

It is a super-2 number, since 2×80513810² = 12964947201432200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 80513810.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23486 + ... + 26694.

Almost surely, 2^80513810 is an apocalyptic number.

80513810 is a deficient number, since it is larger than the sum of its proper divisors (76416670).

80513810 is a wasteful number, since it uses less digits than its factorization.

80513810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 80513810 is about 8972.9487906708. The cubic root of 80513810 is about 431.8074451926.

The spelling of 80513810 in words is "eighty million, five hundred thirteen thousand, eight hundred ten".