2947540 has 12 divisors (see below), whose sum is σ = 6189876. Its totient is φ = 1179008.

The previous prime is 2947537. The next prime is 2947541. The reversal of 2947540 is 457492.

It can be written as a sum of positive squares in 2 ways, for example, as 1354896 + 1592644 = 1164^2 + 1262^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73669 + ... + 73708.

It is an arithmetic number, because the mean of its divisors is an integer number (515823).

2^2947540 is an apocalyptic number.

2947540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2947540 is an abundant number, since it is smaller than the sum of its proper divisors (3242336).

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

2947540 is a wasteful number, since it uses less digits than its factorization.

2947540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147386 (or 147384 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2947540 is about 1716.8401206868. The cubic root of 2947540 is about 143.3793374354.

The spelling of 2947540 in words is "two million, nine hundred forty-seven thousand, five hundred forty".