428787120 has 40 divisors (see below), whose sum is σ = 1329240816. Its totient is φ = 114343168.

The previous prime is 428787113. The next prime is 428787187. The reversal of 428787120 is 21787824.

It is a tau number, because it is divible by the number of its divisors (40).

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, 893067 + ... + 893546.

Almost surely, 2^428787120 is an apocalyptic number.

428787120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428787120 is an abundant number, since it is smaller than the sum of its proper divisors (900453696).

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

428787120 is a wasteful number, since it uses less digits than its factorization.

428787120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786629 (or 1786623 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 428787120 is about 20707.1755679040. The cubic root of 428787120 is about 754.0739021392.

The spelling of 428787120 in words is "four hundred twenty-eight million, seven hundred eighty-seven thousand, one hundred twenty".