428918934 has 32 divisors (see below), whose sum is σ = 870153984. Its totient is φ = 140928480.

The previous prime is 428918933. The next prime is 428918951. The reversal of 428918934 is 439819824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428918933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328527 + ... + 329829.

It is an arithmetic number, because the mean of its divisors is an integer number (27192312).

Almost surely, 2^428918934 is an apocalyptic number.

428918934 is an abundant number, since it is smaller than the sum of its proper divisors (441235050).

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

428918934 is a wasteful number, since it uses less digits than its factorization.

428918934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052.

The product of its digits is 497664, while the sum is 48.

The square root of 428918934 is about 20710.3581330695. The cubic root of 428918934 is about 754.1511644986.

It can be divided in two parts, 42 and 8918934, that added together give a triangular number (8918976 = T₄₂₂₃).

The spelling of 428918934 in words is "four hundred twenty-eight million, nine hundred eighteen thousand, nine hundred thirty-four".