80837140 has 24 divisors (see below), whose sum is σ = 170202312. Its totient is φ = 32250240.

The previous prime is 80837131. The next prime is 80837143. The reversal of 80837140 is 4173808.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15776784 + 65060356 = 3972^2 + 8066^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80837143) 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, 2850 + ... + 13030.

It is an arithmetic number, because the mean of its divisors is an integer number (7091763).

Almost surely, 2^80837140 is an apocalyptic number.

It is an amenable number.

80837140 is an abundant number, since it is smaller than the sum of its proper divisors (89365172).

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

80837140 is a wasteful number, since it uses less digits than its factorization.

80837140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10587 (or 10585 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 80837140 is about 8990.9476697398. The cubic root of 80837140 is about 432.3846953364.

The spelling of 80837140 in words is "eighty million, eight hundred thirty-seven thousand, one hundred forty".