285497030 has 48 divisors (see below), whose sum is σ = 643794480. Its totient is φ = 90353088.

The previous prime is 285497027. The next prime is 285497033. The reversal of 285497030 is 30794582.

It is an interprime number because it is at equal distance from previous prime (285497027) and next prime (285497033).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285497033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16040 + ... + 28779.

It is an arithmetic number, because the mean of its divisors is an integer number (13412385).

Almost surely, 2^285497030 is an apocalyptic number.

285497030 is an abundant number, since it is smaller than the sum of its proper divisors (358297450).

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

285497030 is a wasteful number, since it uses less digits than its factorization.

285497030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44853 (or 44846 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 285497030 is about 16896.6573617387. The cubic root of 285497030 is about 658.4667730719.

The spelling of 285497030 in words is "two hundred eighty-five million, four hundred ninety-seven thousand, thirty".