428247888 has 40 divisors (see below), whose sum is σ = 1141998336. Its totient is φ = 138144000.

The previous prime is 428247887. The next prime is 428247907. The reversal of 428247888 is 888742824.

It is a self number, because there is not a number n which added to its sum of digits gives 428247888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428247881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142413 + ... + 145388.

Almost surely, 2^428247888 is an apocalyptic number.

428247888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

428247888 is an abundant number, since it is smaller than the sum of its proper divisors (713750448).

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

428247888 is a wasteful number, since it uses less digits than its factorization.

428247888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287843 (or 287837 counting only the distinct ones).

The product of its digits is 1835008, while the sum is 51.

The square root of 428247888 is about 20694.1510577264. The cubic root of 428247888 is about 753.7576680215.

The spelling of 428247888 in words is "four hundred twenty-eight million, two hundred forty-seven thousand, eight hundred eighty-eight".