400153340 has 48 divisors (see below), whose sum is σ = 862414560. Its totient is φ = 155904000.

The previous prime is 400153337. The next prime is 400153349. The reversal of 400153340 is 43351004.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400153349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131840 + ... + 134840.

It is an arithmetic number, because the mean of its divisors is an integer number (17966970).

Almost surely, 2^400153340 is an apocalyptic number.

It is an amenable number.

400153340 is an abundant number, since it is smaller than the sum of its proper divisors (462261220).

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

400153340 is a wasteful number, since it uses less digits than its factorization.

400153340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182 (or 3180 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 400153340 is about 20003.8331326773. The cubic root of 400153340 is about 736.9004392646.

The spelling of 400153340 in words is "four hundred million, one hundred fifty-three thousand, three hundred forty".