400023360 has 560 divisors, whose sum is σ = 1646358912. Its totient is φ = 91238400.

The previous prime is 400023343. The next prime is 400023401. The reversal of 400023360 is 63320004.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6557730 + ... + 6557790.

Almost surely, 2^400023360 is an apocalyptic number.

400023360 is a gapful number since it is divisible by the number (40) 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 400023360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (823179456).

400023360 is an abundant number, since it is smaller than the sum of its proper divisors (1246335552).

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

400023360 is a wasteful number, since it uses less digits than its factorization.

400023360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 400023360 is about 20000.5839914738. The cubic root of 400023360 is about 736.8206426115.

Adding to 400023360 its reverse (63320004), we get a palindrome (463343364).

The spelling of 400023360 in words is "four hundred million, twenty-three thousand, three hundred sixty".