400073316 has 48 divisors (see below), whose sum is σ = 977794944. Its totient is φ = 127074816.

The previous prime is 400073279. The next prime is 400073327. The reversal of 400073316 is 613370004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73836 + ... + 79068.

It is an arithmetic number, because the mean of its divisors is an integer number (20370728).

Almost surely, 2^400073316 is an apocalyptic number.

400073316 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400073316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488897472).

400073316 is an abundant number, since it is smaller than the sum of its proper divisors (577721628).

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

400073316 is a wasteful number, since it uses less digits than its factorization.

400073316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540 (or 5538 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 400073316 is about 20001.8328160196. The cubic root of 400073316 is about 736.8513133869.

The spelling of 400073316 in words is "four hundred million, seventy-three thousand, three hundred sixteen".