80409870 has 48 divisors (see below), whose sum is σ = 209740752. Its totient is φ = 21373440.

The previous prime is 80409859. The next prime is 80409887. The reversal of 80409870 is 7890408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30505 + ... + 33035.

It is an arithmetic number, because the mean of its divisors is an integer number (4369599).

Almost surely, 2^80409870 is an apocalyptic number.

80409870 is an abundant number, since it is smaller than the sum of its proper divisors (129330882).

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

80409870 is a wasteful number, since it uses less digits than its factorization.

80409870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897 (or 2894 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 80409870 is about 8967.1550672440. The cubic root of 80409870 is about 431.6215499889.

The spelling of 80409870 in words is "eighty million, four hundred nine thousand, eight hundred seventy".