80649436 has 24 divisors (see below), whose sum is σ = 162128736. Its totient is φ = 34386240.

The previous prime is 80649421. The next prime is 80649461. The reversal of 80649436 is 63494608.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1795 + ... + 12826.

It is an arithmetic number, because the mean of its divisors is an integer number (6755364).

Almost surely, 2^80649436 is an apocalyptic number.

It is an amenable number.

80649436 is an abundant number, since it is smaller than the sum of its proper divisors (81479300).

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

80649436 is a wasteful number, since it uses less digits than its factorization.

80649436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14829 (or 14827 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 80649436 is about 8980.5031039469. The cubic root of 80649436 is about 432.0497699289.

The spelling of 80649436 in words is "eighty million, six hundred forty-nine thousand, four hundred thirty-six".