516226640 has 40 divisors (see below), whose sum is σ = 1204193760. Its totient is φ = 205808256.

The previous prime is 516226639. The next prime is 516226649. The reversal of 516226640 is 46622615.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 516226597 and 516226606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516226649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14051 + ... + 35069.

It is an arithmetic number, because the mean of its divisors is an integer number (30104844).

Almost surely, 2^516226640 is an apocalyptic number.

It is an amenable number.

516226640 is an abundant number, since it is smaller than the sum of its proper divisors (687967120).

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

516226640 is a wasteful number, since it uses less digits than its factorization.

516226640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21339 (or 21333 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 516226640 is about 22720.6214703736. The cubic root of 516226640 is about 802.1953450644.

The spelling of 516226640 in words is "five hundred sixteen million, two hundred twenty-six thousand, six hundred forty".