80187740 has 24 divisors (see below), whose sum is σ = 168796320. Its totient is φ = 31998528.

The previous prime is 80187727. The next prime is 80187743. The reversal of 80187740 is 4778108.

It is a self number, because there is not a number n which added to its sum of digits gives 80187740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80187743) 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, 4214 + ... + 13346.

It is an arithmetic number, because the mean of its divisors is an integer number (7033180).

Almost surely, 2^80187740 is an apocalyptic number.

It is an amenable number.

80187740 is an abundant number, since it is smaller than the sum of its proper divisors (88608580).

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

80187740 is a wasteful number, since it uses less digits than its factorization.

80187740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9581 (or 9579 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 80187740 is about 8954.7607449892. The cubic root of 80187740 is about 431.2237359906.

The spelling of 80187740 in words is "eighty million, one hundred eighty-seven thousand, seven hundred forty".