428771100 has 72 divisors (see below), whose sum is σ = 1305888640. Its totient is φ = 108319680.

The previous prime is 428771099. The next prime is 428771131. The reversal of 428771100 is 1177824.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31912 + ... + 43311.

Almost surely, 2^428771100 is an apocalyptic number.

It is an amenable number.

428771100 is an abundant number, since it is smaller than the sum of its proper divisors (877117540).

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

428771100 is a wasteful number, since it uses less digits than its factorization.

428771100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75259 (or 75252 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 428771100 is about 20706.7887418595. The cubic root of 428771100 is about 754.0645109877.

The spelling of 428771100 in words is "four hundred twenty-eight million, seven hundred seventy-one thousand, one hundred".