428415750 has 128 divisors (see below), whose sum is σ = 1358023680. Its totient is φ = 97912800.

The previous prime is 428415739. The next prime is 428415769. The reversal of 428415750 is 57514824.

428415750 is a `hidden beast` number, since 4 + 2 + 84 + 1 + 575 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42717 + ... + 51783.

It is an arithmetic number, because the mean of its divisors is an integer number (10609560).

Almost surely, 2^428415750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428415750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679011840).

428415750 is an abundant number, since it is smaller than the sum of its proper divisors (929607930).

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

428415750 is a wasteful number, since it uses less digits than its factorization.

428415750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9100 (or 9084 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 428415750 is about 20698.2064440376. The cubic root of 428415750 is about 753.8561396038.

The spelling of 428415750 in words is "four hundred twenty-eight million, four hundred fifteen thousand, seven hundred fifty".