428551900 has 36 divisors (see below), whose sum is σ = 1062810448. Its totient is φ = 146931840.

The previous prime is 428551891. The next prime is 428551909. The reversal of 428551900 is 9155824.

It is an interprime number because it is at equal distance from previous prime (428551891) and next prime (428551909).

It is a super-2 number, since 2×428551900² = 367313461987220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428551909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305409 + ... + 306808.

Almost surely, 2^428551900 is an apocalyptic number.

It is an amenable number.

428551900 is an abundant number, since it is smaller than the sum of its proper divisors (634258548).

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

428551900 is a wasteful number, since it uses less digits than its factorization.

428551900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612238 (or 612231 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 428551900 is about 20701.4951150877. The cubic root of 428551900 is about 753.9359893313.

The spelling of 428551900 in words is "four hundred twenty-eight million, five hundred fifty-one thousand, nine hundred".