400244130 has 192 divisors, whose sum is σ = 1236912768. Its totient is φ = 88519680.

The previous prime is 400244083. The next prime is 400244149. The reversal of 400244130 is 31442004.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1763077 + ... + 1763303.

It is an arithmetic number, because the mean of its divisors is an integer number (6442254).

Almost surely, 2^400244130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400244130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618456384).

400244130 is an abundant number, since it is smaller than the sum of its proper divisors (836668638).

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

400244130 is a wasteful number, since it uses less digits than its factorization.

400244130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 400244130 is about 20006.1023190426. The cubic root of 400244130 is about 736.9561663447.

Adding to 400244130 its reverse (31442004), we get a palindrome (431686134).

The spelling of 400244130 in words is "four hundred million, two hundred forty-four thousand, one hundred thirty".