2974806840 has 64 divisors (see below), whose sum is σ = 8951024160. Its totient is φ = 790917120.

The previous prime is 2974806817. The next prime is 2974806847. The reversal of 2974806840 is 486084792.

It is a self number, because there is not a number n which added to its sum of digits gives 2974806840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2974806847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3660 + ... + 77220.

Almost surely, 2^2974806840 is an apocalyptic number.

2974806840 is a gapful number since it is divisible by the number (20) 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 2974806840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4475512080).

2974806840 is an abundant number, since it is smaller than the sum of its proper divisors (5976217320).

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

2974806840 is a wasteful number, since it uses less digits than its factorization.

2974806840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73912 (or 73908 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 2974806840 is about 54541.7898496190. The cubic root of 2974806840 is about 1438.2010134998.

The spelling of 2974806840 in words is "two billion, nine hundred seventy-four million, eight hundred six thousand, eight hundred forty".