400373712 has 80 divisors (see below), whose sum is σ = 1151712000. Its totient is φ = 133168896.

The previous prime is 400373693. The next prime is 400373717. The reversal of 400373712 is 217373004.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400373717) 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, 309964 + ... + 311252.

It is an arithmetic number, because the mean of its divisors is an integer number (14396400).

Almost surely, 2^400373712 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 400373712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575856000).

400373712 is an abundant number, since it is smaller than the sum of its proper divisors (751338288).

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

400373712 is a wasteful number, since it uses less digits than its factorization.

400373712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025 (or 2013 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 400373712 is about 20009.3406188210. The cubic root of 400373712 is about 737.0356894347.

The spelling of 400373712 in words is "four hundred million, three hundred seventy-three thousand, seven hundred twelve".