405728600 has 24 divisors (see below), whose sum is σ = 943319460. Its totient is φ = 162291360.

The previous prime is 405728599. The next prime is 405728611. The reversal of 405728600 is 6827504.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1014122 + ... + 1014521.

Almost surely, 2^405728600 is an apocalyptic number.

405728600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405728600 is an abundant number, since it is smaller than the sum of its proper divisors (537590860).

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

405728600 is a wasteful number, since it uses less digits than its factorization.

405728600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028659 (or 2028650 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 405728600 is about 20142.7058758251. The cubic root of 405728600 is about 740.3070311029.

The spelling of 405728600 in words is "four hundred five million, seven hundred twenty-eight thousand, six hundred".