427538787 has 16 divisors (see below), whose sum is σ = 614277888. Its totient is φ = 262939680.

The previous prime is 427538759. The next prime is 427538791. The reversal of 427538787 is 787835724.

It is a happy number.

It is not a de Polignac number, because 427538787 - 2¹⁰ = 427537763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (427538707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107362 + ... + 111272.

It is an arithmetic number, because the mean of its divisors is an integer number (38392368).

Almost surely, 2^427538787 is an apocalyptic number.

427538787 is a deficient number, since it is larger than the sum of its proper divisors (186739101).

427538787 is a wasteful number, since it uses less digits than its factorization.

427538787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6730.

The product of its digits is 2634240, while the sum is 51.

The square root of 427538787 is about 20677.0110751046. The cubic root of 427538787 is about 753.3414094252.

The spelling of 427538787 in words is "four hundred twenty-seven million, five hundred thirty-eight thousand, seven hundred eighty-seven".