356404420 has 12 divisors (see below), whose sum is σ = 748449324. Its totient is φ = 142561760.

The previous prime is 356404417. The next prime is 356404429. The reversal of 356404420 is 24404653.

It can be written as a sum of positive squares in 2 ways, for example, as 221890816 + 134513604 = 14896^2 + 11598^2 .

It is a super-2 number, since 2×356404420² = 254048221191072800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (356404429) 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, 8910091 + ... + 8910130.

It is an arithmetic number, because the mean of its divisors is an integer number (62370777).

Almost surely, 2^356404420 is an apocalyptic number.

It is an amenable number.

356404420 is an abundant number, since it is smaller than the sum of its proper divisors (392044904).

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

356404420 is a wasteful number, since it uses less digits than its factorization.

356404420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17820230 (or 17820228 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 356404420 is about 18878.6763307177. The cubic root of 356404420 is about 709.0023812238.

The spelling of 356404420 in words is "three hundred fifty-six million, four hundred four thousand, four hundred twenty".