515247040 has 168 divisors, whose sum is σ = 1542080736. Its totient is φ = 160512000.

The previous prime is 515247037. The next prime is 515247049. The reversal of 515247040 is 40742515.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515247049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270090 + ... + 271990.

It is an arithmetic number, because the mean of its divisors is an integer number (9179052).

Almost surely, 2^515247040 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 515247040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771040368).

515247040 is an abundant number, since it is smaller than the sum of its proper divisors (1026833696).

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

515247040 is a wasteful number, since it uses less digits than its factorization.

515247040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947 (or 1926 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 515247040 is about 22699.0537247701. The cubic root of 515247040 is about 801.6876041537.

Adding to 515247040 its reverse (40742515), we get a palindrome (555989555).

It can be divided in two parts, 51524 and 7040, that added together give a square (58564 = 242²).

The spelling of 515247040 in words is "five hundred fifteen million, two hundred forty-seven thousand, forty".