427165780 has 12 divisors (see below), whose sum is σ = 897048180. Its totient is φ = 170866304.

The previous prime is 427165763. The next prime is 427165801. The reversal of 427165780 is 87561724.

It can be written as a sum of positive squares in 2 ways, for example, as 91470096 + 335695684 = 9564^2 + 18322^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10679125 + ... + 10679164.

It is an arithmetic number, because the mean of its divisors is an integer number (74754015).

Almost surely, 2^427165780 is an apocalyptic number.

It is an amenable number.

427165780 is an abundant number, since it is smaller than the sum of its proper divisors (469882400).

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

427165780 is a wasteful number, since it uses less digits than its factorization.

427165780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21358298 (or 21358296 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 427165780 is about 20667.9892587547. The cubic root of 427165780 is about 753.1222609819.

The spelling of 427165780 in words is "four hundred twenty-seven million, one hundred sixty-five thousand, seven hundred eighty".