427688180 has 24 divisors (see below), whose sum is σ = 922420968. Its totient is φ = 166451328.

The previous prime is 427688171. The next prime is 427688189. The reversal of 427688180 is 81886724.

It is an interprime number because it is at equal distance from previous prime (427688171) and next prime (427688189).

It can be written as a sum of positive squares in 4 ways, for example, as 12588304 + 415099876 = 3548^2 + 20374^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427688189) 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, 288239 + ... + 289718.

It is an arithmetic number, because the mean of its divisors is an integer number (38434207).

Almost surely, 2^427688180 is an apocalyptic number.

It is an amenable number.

427688180 is an abundant number, since it is smaller than the sum of its proper divisors (494732788).

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

427688180 is a wasteful number, since it uses less digits than its factorization.

427688180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578003 (or 578001 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 427688180 is about 20680.6232981504. The cubic root of 427688180 is about 753.4291448000.

The spelling of 427688180 in words is "four hundred twenty-seven million, six hundred eighty-eight thousand, one hundred eighty".