402406368 has 192 divisors, whose sum is σ = 1319980032. Its totient is φ = 104509440.

The previous prime is 402406297. The next prime is 402406379. The reversal of 402406368 is 863604204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 637413 + ... + 638043.

It is an arithmetic number, because the mean of its divisors is an integer number (6874896).

Almost surely, 2^402406368 is an apocalyptic number.

402406368 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402406368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (659990016).

402406368 is an abundant number, since it is smaller than the sum of its proper divisors (917573664).

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

402406368 is a wasteful number, since it uses less digits than its factorization.

402406368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 402406368 is about 20060.0689929023. The cubic root of 402406368 is about 738.2808692900.

The spelling of 402406368 in words is "four hundred two million, four hundred six thousand, three hundred sixty-eight".