513888140 has 24 divisors (see below), whose sum is σ = 1079593872. Its totient is φ = 205473600.

The previous prime is 513888139. The next prime is 513888157. The reversal of 513888140 is 41888315.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 513888094 and 513888103.

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, 87290 + ... + 92990.

It is an arithmetic number, because the mean of its divisors is an integer number (44983078).

Almost surely, 2^513888140 is an apocalyptic number.

It is an amenable number.

513888140 is an abundant number, since it is smaller than the sum of its proper divisors (565705732).

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

513888140 is a wasteful number, since it uses less digits than its factorization.

513888140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10217 (or 10215 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 513888140 is about 22669.1009967312. The cubic root of 513888140 is about 800.9821998608.

The spelling of 513888140 in words is "five hundred thirteen million, eight hundred eighty-eight thousand, one hundred forty".