428140272 has 40 divisors (see below), whose sum is σ = 1264034176. Its totient is φ = 122325696.

The previous prime is 428140231. The next prime is 428140289. The reversal of 428140272 is 272041824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636778 + ... + 637449.

Almost surely, 2^428140272 is an apocalyptic number.

428140272 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

428140272 is an abundant number, since it is smaller than the sum of its proper divisors (835893904).

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

428140272 is a wasteful number, since it uses less digits than its factorization.

428140272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274245 (or 1274239 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 428140272 is about 20691.5507393719. The cubic root of 428140272 is about 753.6945245454.

The spelling of 428140272 in words is "four hundred twenty-eight million, one hundred forty thousand, two hundred seventy-two".