22742545 has 8 divisors (see below), whose sum is σ = 31189824. Its totient is φ = 15594864.

The previous prime is 22742539. The next prime is 22742557. The reversal of 22742545 is 54524722.

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

It is a cyclic number.

It is not a de Polignac number, because 22742545 - 2¹³ = 22734353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324859 + ... + 324928.

It is an arithmetic number, because the mean of its divisors is an integer number (3898728).

Almost surely, 2^22742545 is an apocalyptic number.

It is an amenable number.

22742545 is a deficient number, since it is larger than the sum of its proper divisors (8447279).

22742545 is an equidigital number, since it uses as much as digits as its factorization.

22742545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649799.

The product of its digits is 22400, while the sum is 31.

The square root of 22742545 is about 4768.9144467059. The cubic root of 22742545 is about 283.3216012059.

The spelling of 22742545 in words is "twenty-two million, seven hundred forty-two thousand, five hundred forty-five".