400260006 has 48 divisors (see below), whose sum is σ = 893349600. Its totient is φ = 129518352.

The previous prime is 400259987. The next prime is 400260067. The reversal of 400260006 is 600062004.

400260006 is a `hidden beast` number, since 400 + 260 + 0 + 0 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 911535 + ... + 911973.

It is an arithmetic number, because the mean of its divisors is an integer number (18611450).

Almost surely, 2^400260006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400260006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446674800).

400260006 is an abundant number, since it is smaller than the sum of its proper divisors (493089594).

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

400260006 is an equidigital number, since it uses as much as digits as its factorization.

400260006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 400260006 is about 20006.4990940444. The cubic root of 400260006 is about 736.9659101990.

The spelling of 400260006 in words is "four hundred million, two hundred sixty thousand, six".