427897508 has 12 divisors (see below), whose sum is σ = 753150300. Its totient is φ = 212711712.

The previous prime is 427897501. The next prime is 427897517. The reversal of 427897508 is 805798724.

It can be written as a sum of positive squares in 2 ways, for example, as 367182244 + 60715264 = 19162^2 + 7792^2 .

It is a super-2 number, since 2×427897508² = 366192554705220128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (427897501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308483 + ... + 309866.

It is an arithmetic number, because the mean of its divisors is an integer number (62762525).

Almost surely, 2^427897508 is an apocalyptic number.

It is an amenable number.

427897508 is a deficient number, since it is larger than the sum of its proper divisors (325252792).

427897508 is a wasteful number, since it uses less digits than its factorization.

427897508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618526 (or 618524 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The square root of 427897508 is about 20685.6836483593. The cubic root of 427897508 is about 753.5520443795.

The spelling of 427897508 in words is "four hundred twenty-seven million, eight hundred ninety-seven thousand, five hundred eight".