427515280 has 20 divisors (see below), whose sum is σ = 993973212. Its totient is φ = 171006080.

The previous prime is 427515271. The next prime is 427515299. The reversal of 427515280 is 82515724.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 45859984 + 381655296 = 6772^2 + 19536^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 2671891 + ... + 2672050.

Almost surely, 2^427515280 is an apocalyptic number.

427515280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

427515280 is an abundant number, since it is smaller than the sum of its proper divisors (566457932).

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

427515280 is a wasteful number, since it uses less digits than its factorization.

427515280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5343954 (or 5343948 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 427515280 is about 20676.4426340703. The cubic root of 427515280 is about 753.3276023963.

The spelling of 427515280 in words is "four hundred twenty-seven million, five hundred fifteen thousand, two hundred eighty".