814291428 has 12 divisors (see below), whose sum is σ = 1900013360. Its totient is φ = 271430472.

The previous prime is 814291427. The next prime is 814291433. The reversal of 814291428 is 824192418.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (814291427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33928798 + ... + 33928821.

Almost surely, 2^814291428 is an apocalyptic number.

It is an amenable number.

814291428 is an abundant number, since it is smaller than the sum of its proper divisors (1085721932).

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

814291428 is a wasteful number, since it uses less digits than its factorization.

814291428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67857626 (or 67857624 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 814291428 is about 28535.7920513870. The cubic root of 814291428 is about 933.8130832331.

The spelling of 814291428 in words is "eight hundred fourteen million, two hundred ninety-one thousand, four hundred twenty-eight".