7212878 has 8 divisors (see below), whose sum is σ = 10831968. Its totient is φ = 3602224.

The previous prime is 7212871. The next prime is 7212893. The reversal of 7212878 is 8782127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7212871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875 + ... + 3897.

It is an arithmetic number, because the mean of its divisors is an integer number (1353996).

Almost surely, 2^7212878 is an apocalyptic number.

7212878 is a deficient number, since it is larger than the sum of its proper divisors (3619090).

7212878 is a wasteful number, since it uses less digits than its factorization.

7212878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218.

The product of its digits is 12544, while the sum is 35.

The square root of 7212878 is about 2685.6801745554. The cubic root of 7212878 is about 193.2129340203.

The spelling of 7212878 in words is "seven million, two hundred twelve thousand, eight hundred seventy-eight".