22742746 has 8 divisors (see below), whose sum is σ = 36738324. Its totient is φ = 10496640.

The previous prime is 22742737. The next prime is 22742761. The reversal of 22742746 is 64724722.

It can be written as a sum of positive squares in 2 ways, for example, as 22667121 + 75625 = 4761^2 + 275^2 .

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

It is a super-3 number, since 3×22742746³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

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, 437335 + ... + 437386.

Almost surely, 2^22742746 is an apocalyptic number.

22742746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22742746 is a deficient number, since it is larger than the sum of its proper divisors (13995578).

22742746 is a wasteful number, since it uses less digits than its factorization.

22742746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874736.

The product of its digits is 37632, while the sum is 34.

The square root of 22742746 is about 4768.9355206377. The cubic root of 22742746 is about 283.3224358746.

The spelling of 22742746 in words is "twenty-two million, seven hundred forty-two thousand, seven hundred forty-six".