400381700 has 36 divisors (see below), whose sum is σ = 906608640. Its totient is φ = 153188640.

The previous prime is 400381691. The next prime is 400381721. The reversal of 400381700 is 7183004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84740 + ... + 89339.

Almost surely, 2^400381700 is an apocalyptic number.

It is an amenable number.

400381700 is an abundant number, since it is smaller than the sum of its proper divisors (506226940).

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

400381700 is a wasteful number, since it uses less digits than its factorization.

400381700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174116 (or 174109 counting only the distinct ones).

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

The square root of 400381700 is about 20009.5402246029. The cubic root of 400381700 is about 737.0405910236.

The spelling of 400381700 in words is "four hundred million, three hundred eighty-one thousand, seven hundred".