2947064820 has 72 divisors (see below), whose sum is σ = 9599020704. Its totient is φ = 673614144.

The previous prime is 2947064797. The next prime is 2947064831. The reversal of 2947064820 is 284607492.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 498262 + ... + 504141.

It is an arithmetic number, because the mean of its divisors is an integer number (133319732).

Almost surely, 2^2947064820 is an apocalyptic number.

2947064820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2947064820 is an abundant number, since it is smaller than the sum of its proper divisors (6651955884).

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

2947064820 is a wasteful number, since it uses less digits than its factorization.

2947064820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002429 (or 1002420 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 2947064820 is about 54286.8752093911. The cubic root of 2947064820 is about 1433.7163217891.

The spelling of 2947064820 in words is "two billion, nine hundred forty-seven million, sixty-four thousand, eight hundred twenty".