7278884901 has 12 divisors (see below), whose sum is σ = 10515256128. Its totient is φ = 4851984744.

The previous prime is 7278884897. The next prime is 7278884927. The reversal of 7278884901 is 1094888727.

It is a happy number.

7278884901 is a `hidden beast` number, since 7 + 2 + 78 + 88 + 490 + 1 = 666.

It is not a de Polignac number, because 7278884901 - 2² = 7278884897 is a prime.

It is a super-3 number, since 3×7278884901³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7278884941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33006 + ... + 125088.

It is an arithmetic number, because the mean of its divisors is an integer number (876271344).

Almost surely, 2^7278884901 is an apocalyptic number.

It is an amenable number.

7278884901 is a deficient number, since it is larger than the sum of its proper divisors (3236371227).

7278884901 is a wasteful number, since it uses less digits than its factorization.

7278884901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100872 (or 100869 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The square root of 7278884901 is about 85316.3811996266. The cubic root of 7278884901 is about 1938.0052565938.

The spelling of 7278884901 in words is "seven billion, two hundred seventy-eight million, eight hundred eighty-four thousand, nine hundred one".