400780360 has 32 divisors (see below), whose sum is σ = 902341440. Its totient is φ = 160208064.

The previous prime is 400780301. The next prime is 400780361. The reversal of 400780360 is 63087004.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (400780361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98119 + ... + 102121.

It is an arithmetic number, because the mean of its divisors is an integer number (28198170).

Almost surely, 2^400780360 is an apocalyptic number.

400780360 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400780360 is an abundant number, since it is smaller than the sum of its proper divisors (501561080).

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

400780360 is a wasteful number, since it uses less digits than its factorization.

400780360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6517 (or 6513 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 400780360 is about 20019.4994942431. The cubic root of 400780360 is about 737.2851336140.

The spelling of 400780360 in words is "four hundred million, seven hundred eighty thousand, three hundred sixty".