285728422000 has 160 divisors (see below), whose sum is σ = 831148231680. Its totient is φ = 92807942400.

The previous prime is 285728421967. The next prime is 285728422009. The reversal of 285728422000 is 224827582.

It is a super-2 number, since 2×285728422000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285728422009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 271084 + ... + 803083.

It is an arithmetic number, because the mean of its divisors is an integer number (5194676448).

Almost surely, 2^285728422000 is an apocalyptic number.

285728422000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285728422000 is an abundant number, since it is smaller than the sum of its proper divisors (545419809680).

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

285728422000 is a wasteful number, since it uses less digits than its factorization.

285728422000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074216 (or 1074200 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 40.

The spelling of 285728422000 in words is "two hundred eighty-five billion, seven hundred twenty-eight million, four hundred twenty-two thousand".