2612720440 has 32 divisors (see below), whose sum is σ = 6413042160. Its totient is φ = 950080000.

The previous prime is 2612720431. The next prime is 2612720471. The reversal of 2612720440 is 440272162.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2612720399 and 2612720408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2968561 + ... + 2969440.

Almost surely, 2^2612720440 is an apocalyptic number.

2612720440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2612720440 is an abundant number, since it is smaller than the sum of its proper divisors (3800321720).

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

2612720440 is a wasteful number, since it uses less digits than its factorization.

2612720440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938023 (or 5938019 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 2612720440 is about 51114.7771197332. Note that the first 3 decimals coincide. The cubic root of 2612720440 is about 1377.3077174261.

The spelling of 2612720440 in words is "two billion, six hundred twelve million, seven hundred twenty thousand, four hundred forty".