428329488 has 20 divisors (see below), whose sum is σ = 1106517968. Its totient is φ = 142776480.

The previous prime is 428329487. The next prime is 428329519. The reversal of 428329488 is 884923824.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 8923531 = 428329488 / (4 + 2 + 8 + 3 + 2 + 9 + 4 + 8 + 8).

It is not an unprimeable number, because it can be changed into a prime (428329481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4461718 + ... + 4461813.

Almost surely, 2^428329488 is an apocalyptic number.

428329488 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

428329488 is an abundant number, since it is smaller than the sum of its proper divisors (678188480).

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

428329488 is a wasteful number, since it uses less digits than its factorization.

428329488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8923542 (or 8923536 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 428329488 is about 20696.1225353930. The cubic root of 428329488 is about 753.8055396097.

The spelling of 428329488 in words is "four hundred twenty-eight million, three hundred twenty-nine thousand, four hundred eighty-eight".