428253140 has 36 divisors (see below), whose sum is σ = 1046163636. Its totient is φ = 146829312.

The previous prime is 428253131. The next prime is 428253151. The reversal of 428253140 is 41352824.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68923204 + 359329936 = 8302^2 + 18956^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217517 + ... + 219476.

It is an arithmetic number, because the mean of its divisors is an integer number (29060101).

Almost surely, 2^428253140 is an apocalyptic number.

It is an amenable number.

428253140 is an abundant number, since it is smaller than the sum of its proper divisors (617910496).

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

428253140 is a wasteful number, since it uses less digits than its factorization.

428253140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437016 (or 437007 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 428253140 is about 20694.2779530961. The cubic root of 428253140 is about 753.7607493514.

The spelling of 428253140 in words is "four hundred twenty-eight million, two hundred fifty-three thousand, one hundred forty".