7212478 has 32 divisors (see below), whose sum is σ = 13902336. Its totient is φ = 2727648.

The previous prime is 7212397. The next prime is 7212487. The reversal of 7212478 is 8742127.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3325 + ... + 5047.

It is an arithmetic number, because the mean of its divisors is an integer number (434448).

Almost surely, 2^7212478 is an apocalyptic number.

7212478 is a deficient number, since it is larger than the sum of its proper divisors (6689858).

7212478 is a wasteful number, since it uses less digits than its factorization.

7212478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768.

The product of its digits is 6272, while the sum is 31.

The square root of 7212478 is about 2685.6057044920. The cubic root of 7212478 is about 193.2093623252.

The spelling of 7212478 in words is "seven million, two hundred twelve thousand, four hundred seventy-eight".