285401072 has 20 divisors (see below), whose sum is σ = 603234456. Its totient is φ = 129727680.

The previous prime is 285401069. The next prime is 285401087. The reversal of 285401072 is 270104582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810623 + ... + 810974.

Almost surely, 2^285401072 is an apocalyptic number.

285401072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

285401072 is an abundant number, since it is smaller than the sum of its proper divisors (317833384).

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

285401072 is a wasteful number, since it uses less digits than its factorization.

285401072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621616 (or 1621610 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 285401072 is about 16893.8175673825. The cubic root of 285401072 is about 658.3929926956.

The spelling of 285401072 in words is "two hundred eighty-five million, four hundred one thousand, seventy-two".