285200013 has 16 divisors (see below), whose sum is σ = 457464320. Its totient is φ = 154393776.

The previous prime is 285200009. The next prime is 285200017. The reversal of 285200013 is 310002582.

It is an interprime number because it is at equal distance from previous prime (285200009) and next prime (285200017).

It is not a de Polignac number, because 285200013 - 2² = 285200009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285200017) 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, 356995 + ... + 357792.

It is an arithmetic number, because the mean of its divisors is an integer number (28591520).

Almost surely, 2^285200013 is an apocalyptic number.

It is an amenable number.

285200013 is a deficient number, since it is larger than the sum of its proper divisors (172264307).

285200013 is a wasteful number, since it uses less digits than its factorization.

285200013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714816.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 285200013 is about 16887.8658509594. The cubic root of 285200013 is about 658.2383484105.

Adding to 285200013 its reverse (310002582), we get a palindrome (595202595).

The spelling of 285200013 in words is "two hundred eighty-five million, two hundred thousand, thirteen".