400261460 has 24 divisors (see below), whose sum is σ = 867664896. Its totient is φ = 154939680.

The previous prime is 400261457. The next prime is 400261483. The reversal of 400261460 is 64162004.

It is a happy number.

It is a super-2 number, since 2×400261460² = 320418472722663200, which contains 22 as substring.

It is a congruent 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, 322172 + ... + 323411.

It is an arithmetic number, because the mean of its divisors is an integer number (36152704).

Almost surely, 2^400261460 is an apocalyptic number.

It is an amenable number.

400261460 is an abundant number, since it is smaller than the sum of its proper divisors (467403436).

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

400261460 is a wasteful number, since it uses less digits than its factorization.

400261460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645623 (or 645621 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 400261460 is about 20006.5354322031. The cubic root of 400261460 is about 736.9668025749.

The spelling of 400261460 in words is "four hundred million, two hundred sixty-one thousand, four hundred sixty".