428983731 has 24 divisors (see below), whose sum is σ = 677873664. Its totient is φ = 259259760.

The previous prime is 428983727. The next prime is 428983739. The reversal of 428983731 is 137389824.

It is not a de Polignac number, because 428983731 - 2² = 428983727 is a prime.

It is a super-2 number, since 2×428983731² = 368054082925360722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428983739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30430 + ... + 42236.

It is an arithmetic number, because the mean of its divisors is an integer number (28244736).

Almost surely, 2^428983731 is an apocalyptic number.

428983731 is a deficient number, since it is larger than the sum of its proper divisors (248889933).

428983731 is a wasteful number, since it uses less digits than its factorization.

428983731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12191 (or 12188 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 428983731 is about 20711.9224361236. The cubic root of 428983731 is about 754.1891392521.

The spelling of 428983731 in words is "four hundred twenty-eight million, nine hundred eighty-three thousand, seven hundred thirty-one".