407428 has 12 divisors (see below), whose sum is σ = 814912. Its totient is φ = 174600.

The previous prime is 407401. The next prime is 407437. The reversal of 407428 is 824704.

407428 is an admirable number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7248 + ... + 7303.

2⁴⁰⁷⁴²⁸ is an apocalyptic number.

It is an amenable number.

407428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

407428 is a wasteful number, since it uses less digits than its factorization.

407428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14562 (or 14560 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 407428 is about 638.3008694965. The cubic root of 407428 is about 74.1339186878.

The spelling of 407428 in words is "four hundred seven thousand, four hundred twenty-eight".