5249649840 has 320 divisors, whose sum is σ = 17983848960. Its totient is φ = 1261854720.

The previous prime is 5249649809. The next prime is 5249649857. The reversal of 5249649840 is 489469425.

It is a super-2 number, since 2×5249649840² = 55117646885224051200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8038954 + ... + 8039606.

It is an arithmetic number, because the mean of its divisors is an integer number (56199528).

Almost surely, 2^5249649840 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 5249649840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8991924480).

5249649840 is an abundant number, since it is smaller than the sum of its proper divisors (12734199120).

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

5249649840 is a wasteful number, since it uses less digits than its factorization.

5249649840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The square root of 5249649840 is about 72454.4673570926. The cubic root of 5249649840 is about 1737.9746814098.

The spelling of 5249649840 in words is "five billion, two hundred forty-nine million, six hundred forty-nine thousand, eight hundred forty".