428440554 has 48 divisors (see below), whose sum is σ = 944633664. Its totient is φ = 140313600.

The previous prime is 428440547. The next prime is 428440559. The reversal of 428440554 is 455044824.

It is a super-2 number, since 2×428440554² = 367122616623653832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428440559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 668074 + ... + 668714.

It is an arithmetic number, because the mean of its divisors is an integer number (19679868).

Almost surely, 2^428440554 is an apocalyptic number.

428440554 is an abundant number, since it is smaller than the sum of its proper divisors (516193110).

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

428440554 is a wasteful number, since it uses less digits than its factorization.

428440554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

The square root of 428440554 is about 20698.8056177162. The cubic root of 428440554 is about 753.8706880005.

The spelling of 428440554 in words is "four hundred twenty-eight million, four hundred forty thousand, five hundred fifty-four".