4591212840 has 256 divisors, whose sum is σ = 16002201600. Its totient is φ = 1184129280.

The previous prime is 4591212803. The next prime is 4591212889. The reversal of 4591212840 is 482121954.

4591212840 is a `hidden beast` number, since 4 + 591 + 2 + 1 + 28 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4591212795 and 4591212804.

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, 2711034 + ... + 2712726.

It is an arithmetic number, because the mean of its divisors is an integer number (62508600).

Almost surely, 2^4591212840 is an apocalyptic number.

4591212840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4591212840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8001100800).

4591212840 is an abundant number, since it is smaller than the sum of its proper divisors (11410988760).

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

4591212840 is a wasteful number, since it uses less digits than its factorization.

4591212840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756 (or 1734 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 4591212840 is about 67758.4890622570. The cubic root of 4591212840 is about 1662.0438414584.

The spelling of 4591212840 in words is "four billion, five hundred ninety-one million, two hundred twelve thousand, eight hundred forty".