22273147 has 4 divisors (see below), whose sum is σ = 23986480. Its totient is φ = 20559816.

The previous prime is 22273129. The next prime is 22273171. The reversal of 22273147 is 74137222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22273147 - 2⁷ = 22273019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22273117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856647 + ... + 856672.

It is an arithmetic number, because the mean of its divisors is an integer number (5996620).

Almost surely, 2^22273147 is an apocalyptic number.

22273147 is a deficient number, since it is larger than the sum of its proper divisors (1713333).

22273147 is a wasteful number, since it uses less digits than its factorization.

22273147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713332.

The product of its digits is 4704, while the sum is 28.

The square root of 22273147 is about 4719.4435053298. The cubic root of 22273147 is about 281.3588160334.

It can be divided in two parts, 222731 and 47, that added together give a triangular number (222778 = T₆₆₇).

The spelling of 22273147 in words is "twenty-two million, two hundred seventy-three thousand, one hundred forty-seven".