285642470420 has 48 divisors (see below), whose sum is σ = 637792081920. Its totient is φ = 107086017024.

The previous prime is 285642470419. The next prime is 285642470429. The reversal of 285642470420 is 24074246582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285642470429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1676324 + ... + 1838843.

It is an arithmetic number, because the mean of its divisors is an integer number (13287335040).

Almost surely, 2^285642470420 is an apocalyptic number.

285642470420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285642470420 is an abundant number, since it is smaller than the sum of its proper divisors (352149611500).

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

285642470420 is a wasteful number, since it uses less digits than its factorization.

285642470420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3515432 (or 3515430 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 44.

The spelling of 285642470420 in words is "two hundred eighty-five billion, six hundred forty-two million, four hundred seventy thousand, four hundred twenty".