400354152 has 128 divisors (see below), whose sum is σ = 1121541120. Its totient is φ = 119064000.

The previous prime is 400354151. The next prime is 400354159. The reversal of 400354152 is 251453004.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (400354151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2651277 + ... + 2651427.

It is an arithmetic number, because the mean of its divisors is an integer number (8762040).

Almost surely, 2^400354152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400354152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560770560).

400354152 is an abundant number, since it is smaller than the sum of its proper divisors (721186968).

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

400354152 is a wasteful number, since it uses less digits than its factorization.

400354152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 400354152 is about 20008.8518411227. The cubic root of 400354152 is about 737.0236867712.

The spelling of 400354152 in words is "four hundred million, three hundred fifty-four thousand, one hundred fifty-two".