3012912720 has 160 divisors (see below), whose sum is σ = 10988403840. Its totient is φ = 756172800.

The previous prime is 3012912713. The next prime is 3012912733. The reversal of 3012912720 is 272192103.

3012912720 is a `hidden beast` number, since 301 + 2 + 91 + 272 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4306 + ... + 77745.

It is an arithmetic number, because the mean of its divisors is an integer number (68677524).

Almost surely, 2^3012912720 is an apocalyptic number.

3012912720 is a gapful number since it is divisible by the number (30) 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 3012912720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5494201920).

3012912720 is an abundant number, since it is smaller than the sum of its proper divisors (7975491120).

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

3012912720 is a wasteful number, since it uses less digits than its factorization.

3012912720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82090 (or 82078 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 3012912720 is about 54890.0056476587. The cubic root of 3012912720 is about 1444.3158712820.

It can be divided in two parts, 30129 and 12720, that added together give a square (42849 = 207²).

The spelling of 3012912720 in words is "three billion, twelve million, nine hundred twelve thousand, seven hundred twenty".