286928980 has 48 divisors (see below), whose sum is σ = 650344464. Its totient is φ = 105707520.

The previous prime is 286928927. The next prime is 286929017. The reversal of 286928980 is 89829682.

It can be written as a sum of positive squares in 8 ways, for example, as 87385104 + 199543876 = 9348^2 + 14126^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153250 + ... + 155110.

It is an arithmetic number, because the mean of its divisors is an integer number (13548843).

Almost surely, 2^286928980 is an apocalyptic number.

286928980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286928980 is an abundant number, since it is smaller than the sum of its proper divisors (363415484).

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

286928980 is a wasteful number, since it uses less digits than its factorization.

286928980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476 (or 2474 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 52.

The square root of 286928980 is about 16938.9781273842. The cubic root of 286928980 is about 659.5658148291.

The spelling of 286928980 in words is "two hundred eighty-six million, nine hundred twenty-eight thousand, nine hundred eighty".