7278752920 has 32 divisors (see below), whose sum is σ = 16941927600. Its totient is φ = 2811104128.

The previous prime is 7278752893. The next prime is 7278752947. The reversal of 7278752920 is 292578727.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7278752893) and next prime (7278752947).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3136234 + ... + 3138553.

Almost surely, 2^7278752920 is an apocalyptic number.

It is an amenable number.

7278752920 is an abundant number, since it is smaller than the sum of its proper divisors (9663174680).

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

7278752920 is a wasteful number, since it uses less digits than its factorization.

7278752920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6274827 (or 6274823 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 49.

The square root of 7278752920 is about 85315.6077162907. The cubic root of 7278752920 is about 1937.9935431963.

The spelling of 7278752920 in words is "seven billion, two hundred seventy-eight million, seven hundred fifty-two thousand, nine hundred twenty".