428043888 has 30 divisors (see below), whose sum is σ = 1197928784. Its totient is φ = 142681248.

The previous prime is 428043881. The next prime is 428043907. The reversal of 428043888 is 888340824.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428043881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1486120 + ... + 1486407.

Almost surely, 2^428043888 is an apocalyptic number.

428043888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

428043888 is an abundant number, since it is smaller than the sum of its proper divisors (769884896).

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

428043888 is a wasteful number, since it uses less digits than its factorization.

428043888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972541 (or 2972532 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 45.

The square root of 428043888 is about 20689.2215416627. The cubic root of 428043888 is about 753.6379624405.

The spelling of 428043888 in words is "four hundred twenty-eight million, forty-three thousand, eight hundred eighty-eight".