515423040 has 112 divisors (see below), whose sum is σ = 1785274560. Its totient is φ = 124948480.

The previous prime is 515423033. The next prime is 515423053. The reversal of 515423040 is 40324515.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 515423040.

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, 13845 + ... + 34964.

Almost surely, 2^515423040 is an apocalyptic number.

It is an amenable number.

515423040 is an abundant number, since it is smaller than the sum of its proper divisors (1269851520).

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

515423040 is a wasteful number, since it uses less digits than its factorization.

515423040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48840 (or 48830 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 515423040 is about 22702.9302073543. The cubic root of 515423040 is about 801.7788749066.

Adding to 515423040 its reverse (40324515), we get a palindrome (555747555).

The spelling of 515423040 in words is "five hundred fifteen million, four hundred twenty-three thousand, forty".