515426340 has 144 divisors (see below), whose sum is σ = 1705185216. Its totient is φ = 115315200.

The previous prime is 515426321. The next prime is 515426341. The reversal of 515426340 is 43624515.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 515426298 and 515426307.

It is not an unprimeable number, because it can be changed into a prime (515426341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109230 + ... + 113850.

It is an arithmetic number, because the mean of its divisors is an integer number (11841564).

Almost surely, 2^515426340 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 515426340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (852592608).

515426340 is an abundant number, since it is smaller than the sum of its proper divisors (1189758876).

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

515426340 is a wasteful number, since it uses less digits than its factorization.

515426340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670 (or 4655 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 515426340 is about 22703.0028850811. The cubic root of 515426340 is about 801.7805860348.

The spelling of 515426340 in words is "five hundred fifteen million, four hundred twenty-six thousand, three hundred forty".