2979278672 has 20 divisors (see below), whose sum is σ = 5805724020. Its totient is φ = 1481027328.

The previous prime is 2979278671. The next prime is 2979278689. The reversal of 2979278672 is 2768729792.

It can be written as a sum of positive squares in 2 ways, for example, as 2276816656 + 702462016 = 47716^2 + 26504^2 .

It is a super-3 number, since 3×2979278672³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2979278671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535397 + ... + 540932.

It is an arithmetic number, because the mean of its divisors is an integer number (290286201).

Almost surely, 2^2979278672 is an apocalyptic number.

It is an amenable number.

2979278672 is a deficient number, since it is larger than the sum of its proper divisors (2826445348).

2979278672 is a wasteful number, since it uses less digits than its factorization.

2979278672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076510 (or 1076504 counting only the distinct ones).

The product of its digits is 10668672, while the sum is 59.

The square root of 2979278672 is about 54582.7690026807. The cubic root of 2979278672 is about 1438.9213037818.

The spelling of 2979278672 in words is "two billion, nine hundred seventy-nine million, two hundred seventy-eight thousand, six hundred seventy-two".