428316732 has 18 divisors (see below), whose sum is σ = 1082689608. Its totient is φ = 142772232.

The previous prime is 428316719. The next prime is 428316743. The reversal of 428316732 is 237613824.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×428316732² = 366910445822319648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11897687 = 428316732 / (4 + 2 + 8 + 3 + 1 + 6 + 7 + 3 + 2).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5948808 + ... + 5948879.

Almost surely, 2^428316732 is an apocalyptic number.

It is an amenable number.

428316732 is an abundant number, since it is smaller than the sum of its proper divisors (654372876).

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

428316732 is a wasteful number, since it uses less digits than its factorization.

428316732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11897697 (or 11897692 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 428316732 is about 20695.8143594303. The cubic root of 428316732 is about 753.7980565550.

The spelling of 428316732 in words is "four hundred twenty-eight million, three hundred sixteen thousand, seven hundred thirty-two".