400352130 has 24 divisors (see below), whose sum is σ = 1040915772. Its totient is φ = 106760544.

The previous prime is 400352101. The next prime is 400352131. The reversal of 400352130 is 31253004.

It can be written as a sum of positive squares in 2 ways, for example, as 396925929 + 3426201 = 19923^2 + 1851^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (400352131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2224089 + ... + 2224268.

Almost surely, 2^400352130 is an apocalyptic number.

400352130 is an abundant number, since it is smaller than the sum of its proper divisors (640563642).

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

400352130 is a wasteful number, since it uses less digits than its factorization.

400352130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448370 (or 4448367 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 400352130 is about 20008.8013134221. The cubic root of 400352130 is about 737.0224459828.

The spelling of 400352130 in words is "four hundred million, three hundred fifty-two thousand, one hundred thirty".