285502147 has 16 divisors (see below), whose sum is σ = 338978304. Its totient is φ = 235368000.

The previous prime is 285502103. The next prime is 285502163. The reversal of 285502147 is 741205582.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-285502147 is a prime.

It is a super-2 number, since 2×285502147² = 163022951883219218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (285508147) 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 15 ways as a sum of consecutive naturals, for example, 13372 + ... + 27382.

It is an arithmetic number, because the mean of its divisors is an integer number (21186144).

Almost surely, 2^285502147 is an apocalyptic number.

285502147 is a deficient number, since it is larger than the sum of its proper divisors (53476157).

285502147 is a wasteful number, since it uses less digits than its factorization.

285502147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14130.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 285502147 is about 16896.8087815422. The cubic root of 285502147 is about 658.4707069766.

The spelling of 285502147 in words is "two hundred eighty-five million, five hundred two thousand, one hundred forty-seven".