400673860 has 24 divisors (see below), whose sum is σ = 870430680. Its totient is φ = 154742784.

The previous prime is 400673837. The next prime is 400673887. The reversal of 400673860 is 68376004.

It can be written as a sum of positive squares in 4 ways, for example, as 169208064 + 231465796 = 13008^2 + 15214^2 .

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, 344829 + ... + 345988.

It is an arithmetic number, because the mean of its divisors is an integer number (36267945).

Almost surely, 2^400673860 is an apocalyptic number.

It is an amenable number.

400673860 is an abundant number, since it is smaller than the sum of its proper divisors (469756820).

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

400673860 is a wasteful number, since it uses less digits than its factorization.

400673860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690855 (or 690853 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 400673860 is about 20016.8394108561. The cubic root of 400673860 is about 737.2198211796.

The spelling of 400673860 in words is "four hundred million, six hundred seventy-three thousand, eight hundred sixty".