517274940 has 192 divisors, whose sum is σ = 1795046400. Its totient is φ = 108380160.

The previous prime is 517274909. The next prime is 517274941. The reversal of 517274940 is 49472715.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517274941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1151836 + ... + 1152284.

It is an arithmetic number, because the mean of its divisors is an integer number (9349200).

Almost surely, 2^517274940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 517274940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897523200).

517274940 is an abundant number, since it is smaller than the sum of its proper divisors (1277771460).

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

517274940 is a wasteful number, since it uses less digits than its factorization.

517274940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 517274940 is about 22743.6791219011. The cubic root of 517274940 is about 802.7379832030.

The spelling of 517274940 in words is "five hundred seventeen million, two hundred seventy-four thousand, nine hundred forty".