2947977240 has 256 divisors, whose sum is σ = 10048389120. Its totient is φ = 686776320.

The previous prime is 2947977217. The next prime is 2947977247. The reversal of 2947977240 is 427797492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947977247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2272272 + ... + 2273568.

It is an arithmetic number, because the mean of its divisors is an integer number (39251520).

Almost surely, 2^2947977240 is an apocalyptic number.

2947977240 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 2947977240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5024194560).

2947977240 is an abundant number, since it is smaller than the sum of its proper divisors (7100411880).

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

2947977240 is a wasteful number, since it uses less digits than its factorization.

2947977240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 51.

The square root of 2947977240 is about 54295.2782477445. The cubic root of 2947977240 is about 1433.8642674623.

The spelling of 2947977240 in words is "two billion, nine hundred forty-seven million, nine hundred seventy-seven thousand, two hundred forty".