527394640 has 20 divisors (see below), whose sum is σ = 1226192724. Its totient is φ = 210957824.

The previous prime is 527394619. The next prime is 527394641. The reversal of 527394640 is 46493725.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 148547344 + 378847296 = 12188^2 + 19464^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 527394593 and 527394602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (527394641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3296137 + ... + 3296296.

Almost surely, 2^527394640 is an apocalyptic number.

It is an amenable number.

527394640 is an abundant number, since it is smaller than the sum of its proper divisors (698798084).

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

527394640 is a wasteful number, since it uses less digits than its factorization.

527394640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592446 (or 6592440 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 527394640 is about 22965.0743521548. The cubic root of 527394640 is about 807.9389964727.

The spelling of 527394640 in words is "five hundred twenty-seven million, three hundred ninety-four thousand, six hundred forty".