428127900 has 36 divisors (see below), whose sum is σ = 1238717592. Its totient is φ = 114167360.

The previous prime is 428127871. The next prime is 428127901. The reversal of 428127900 is 9721824.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428127901) 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, 713247 + ... + 713846.

It is an arithmetic number, because the mean of its divisors is an integer number (34408822).

Almost surely, 2^428127900 is an apocalyptic number.

It is an amenable number.

428127900 is an abundant number, since it is smaller than the sum of its proper divisors (810589692).

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

428127900 is a wasteful number, since it uses less digits than its factorization.

428127900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427110 (or 1427103 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 428127900 is about 20691.2517746027. The cubic root of 428127900 is about 753.6872646207.

The spelling of 428127900 in words is "four hundred twenty-eight million, one hundred twenty-seven thousand, nine hundred".