400378010 has 16 divisors (see below), whose sum is σ = 725455872. Its totient is φ = 159090000.

The previous prime is 400377977. The next prime is 400378021. The reversal of 400378010 is 10873004.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131066 + ... + 134085.

It is an arithmetic number, because the mean of its divisors is an integer number (45340992).

Almost surely, 2^400378010 is an apocalyptic number.

400378010 is a deficient number, since it is larger than the sum of its proper divisors (325077862).

400378010 is a wasteful number, since it uses less digits than its factorization.

400378010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265309.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 400378010 is about 20009.4480183737. The cubic root of 400378010 is about 737.0383267774.

The spelling of 400378010 in words is "four hundred million, three hundred seventy-eight thousand, ten".