400284530 has 8 divisors (see below), whose sum is σ = 720512172. Its totient is φ = 160113808.

The previous prime is 400284413. The next prime is 400284559. The reversal of 400284530 is 35482004.

400284530 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 359974729 + 40309801 = 18973^2 + 6349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 400284530.

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, 20014217 + ... + 20014236.

Almost surely, 2^400284530 is an apocalyptic number.

400284530 is a deficient number, since it is larger than the sum of its proper divisors (320227642).

400284530 is a wasteful number, since it uses less digits than its factorization.

400284530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40028460.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 400284530 is about 20007.1119854916. Note that the first 3 decimals coincide. The cubic root of 400284530 is about 736.9809612346.

The spelling of 400284530 in words is "four hundred million, two hundred eighty-four thousand, five hundred thirty".