428165294 has 32 divisors (see below), whose sum is σ = 667971360. Its totient is φ = 205742592.

The previous prime is 428165267. The next prime is 428165317. The reversal of 428165294 is 492561824.

It is a super-2 number, since 2×428165294² = 366651037972212872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1078304 + ... + 1078700.

It is an arithmetic number, because the mean of its divisors is an integer number (20874105).

Almost surely, 2^428165294 is an apocalyptic number.

428165294 is a deficient number, since it is larger than the sum of its proper divisors (239806066).

428165294 is a wasteful number, since it uses less digits than its factorization.

428165294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its digits is 138240, while the sum is 41.

The square root of 428165294 is about 20692.1553734743. The cubic root of 428165294 is about 753.7092070987.

The spelling of 428165294 in words is "four hundred twenty-eight million, one hundred sixty-five thousand, two hundred ninety-four".