286629138 has 16 divisors (see below), whose sum is σ = 636953760. Its totient is φ = 95543028.

The previous prime is 286629137. The next prime is 286629169. The reversal of 286629138 is 831926682.

286629138 is a `hidden beast` number, since 2 + 8 + 6 + 629 + 13 + 8 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 286629093 and 286629102.

It is not an unprimeable number, because it can be changed into a prime (286629137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2653920 + ... + 2654027.

It is an arithmetic number, because the mean of its divisors is an integer number (39809610).

Almost surely, 2^286629138 is an apocalyptic number.

286629138 is an abundant number, since it is smaller than the sum of its proper divisors (350324622).

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

286629138 is a wasteful number, since it uses less digits than its factorization.

286629138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5307958 (or 5307952 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 286629138 is about 16930.1251619709. The cubic root of 286629138 is about 659.3359850623.

The spelling of 286629138 in words is "two hundred eighty-six million, six hundred twenty-nine thousand, one hundred thirty-eight".