286404540 has 24 divisors (see below), whose sum is σ = 801932880. Its totient is φ = 76374528.

The previous prime is 286404539. The next prime is 286404563. The reversal of 286404540 is 45404682.

It is a super-2 number, since 2×286404540² = 164055121065223200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2386645 + ... + 2386764.

It is an arithmetic number, because the mean of its divisors is an integer number (33413870).

Almost surely, 2^286404540 is an apocalyptic number.

286404540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286404540 is an abundant number, since it is smaller than the sum of its proper divisors (515528340).

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

286404540 is a wasteful number, since it uses less digits than its factorization.

286404540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4773421 (or 4773419 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 286404540 is about 16923.4907746599. The cubic root of 286404540 is about 659.1637250232.

The spelling of 286404540 in words is "two hundred eighty-six million, four hundred four thousand, five hundred forty".