5129640 has 48 divisors (see below), whose sum is σ = 16672500. Its totient is φ = 1367808.

The previous prime is 5129617. The next prime is 5129647. The reversal of 5129640 is 469215.

5129640 is a `hidden beast` number, since 5 + 12 + 9 + 640 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5116644 + 12996 = 2262^2 + 114^2 .

It is not an unprimeable number, because it can be changed into a prime (5129647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6765 + ... + 7484.

Almost surely, 2^5129640 is an apocalyptic number.

It is an amenable number.

5129640 is an abundant number, since it is smaller than the sum of its proper divisors (11542860).

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

5129640 is a wasteful number, since it uses less digits than its factorization.

5129640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14266 (or 14259 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 5129640 is about 2264.8708572455. The cubic root of 5129640 is about 172.4628779602.

The spelling of 5129640 in words is "five million, one hundred twenty-nine thousand, six hundred forty".