7212256 has 12 divisors (see below), whose sum is σ = 14199192. Its totient is φ = 3606112.

The previous prime is 7212253. The next prime is 7212259. The reversal of 7212256 is 6522127.

It is an interprime number because it is at equal distance from previous prime (7212253) and next prime (7212259).

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7212256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7212253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112660 + ... + 112723.

It is an arithmetic number, because the mean of its divisors is an integer number (1183266).

Almost surely, 2^7212256 is an apocalyptic number.

7212256 is the 1699-th centered pentagonal number.

It is an amenable number.

7212256 is a deficient number, since it is larger than the sum of its proper divisors (6986936).

7212256 is a wasteful number, since it uses less digits than its factorization.

7212256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225393 (or 225385 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 7212256 is about 2685.5643727157. The cubic root of 7212256 is about 193.2073799775.

The spelling of 7212256 in words is "seven million, two hundred twelve thousand, two hundred fifty-six".