428550894 has 48 divisors (see below), whose sum is σ = 946604880. Its totient is φ = 140088960.

The previous prime is 428550887. The next prime is 428550989. The reversal of 428550894 is 498055824.

428550894 is a `hidden beast` number, since 4 + 2 + 8 + 550 + 8 + 94 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323754 + ... + 325074.

It is an arithmetic number, because the mean of its divisors is an integer number (19720935).

Almost surely, 2^428550894 is an apocalyptic number.

428550894 is an abundant number, since it is smaller than the sum of its proper divisors (518053986).

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

428550894 is a wasteful number, since it uses less digits than its factorization.

428550894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 428550894 is about 20701.4708173115. The cubic root of 428550894 is about 753.9353993909.

The spelling of 428550894 in words is "four hundred twenty-eight million, five hundred fifty thousand, eight hundred ninety-four".