516738440 has 32 divisors (see below), whose sum is σ = 1223856000. Its totient is φ = 195816384.

The previous prime is 516738433. The next prime is 516738479. The reversal of 516738440 is 44837615.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 516738394 and 516738403.

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, 339200 + ... + 340719.

It is an arithmetic number, because the mean of its divisors is an integer number (38245500).

Almost surely, 2^516738440 is an apocalyptic number.

It is an amenable number.

516738440 is an abundant number, since it is smaller than the sum of its proper divisors (707117560).

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

516738440 is a wasteful number, since it uses less digits than its factorization.

516738440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679949 (or 679945 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 516738440 is about 22731.8815763236. The cubic root of 516738440 is about 802.4603630103.

The spelling of 516738440 in words is "five hundred sixteen million, seven hundred thirty-eight thousand, four hundred forty".