400570146 has 24 divisors (see below), whose sum is σ = 869054940. Its totient is φ = 133346016.

The previous prime is 400570129. The next prime is 400570151. The reversal of 400570146 is 641075004.

It can be written as a sum of positive squares in 2 ways, for example, as 399560121 + 1010025 = 19989^2 + 1005^2 .

It is a super-2 number, since 2×400570146² = 320912883732922632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 481 + ... + 28308.

Almost surely, 2^400570146 is an apocalyptic number.

400570146 is an abundant number, since it is smaller than the sum of its proper divisors (468484794).

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

400570146 is a wasteful number, since it uses less digits than its factorization.

400570146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29570 (or 29567 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 400570146 is about 20014.2485744532. The cubic root of 400570146 is about 737.1562061697.

The spelling of 400570146 in words is "four hundred million, five hundred seventy thousand, one hundred forty-six".