2678720246 has 4 divisors (see below), whose sum is σ = 4018080372. Its totient is φ = 1339360122.

The previous prime is 2678720237. The next prime is 2678720251. The reversal of 2678720246 is 6420278762.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2678720197 and 2678720206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669680060 + ... + 669680063.

It is an arithmetic number, because the mean of its divisors is an integer number (1004520093).

Almost surely, 2^2678720246 is an apocalyptic number.

2678720246 is a deficient number, since it is larger than the sum of its proper divisors (1339360126).

2678720246 is a wasteful number, since it uses less digits than its factorization.

2678720246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339360125.

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 2678720246 is about 51756.3546436570. The cubic root of 2678720246 is about 1388.8087798142.

The spelling of 2678720246 in words is "two billion, six hundred seventy-eight million, seven hundred twenty thousand, two hundred forty-six".