22750642 has 4 divisors (see below), whose sum is σ = 34125966. Its totient is φ = 11375320.

The previous prime is 22750633. The next prime is 22750643. The reversal of 22750642 is 24605722.

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

It can be written as a sum of positive squares in only one way, i.e., 22667121 + 83521 = 4761^2 + 289^2 .

It is a super-4 number, since 4×22750642⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 22750642.

It is not an unprimeable number, because it can be changed into a prime (22750643) by changing a digit.

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 as a sum of consecutive naturals, namely, 5687659 + ... + 5687662.

Almost surely, 2^22750642 is an apocalyptic number.

22750642 is a deficient number, since it is larger than the sum of its proper divisors (11375324).

22750642 is a wasteful number, since it uses less digits than its factorization.

22750642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11375323.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 22750642 is about 4769.7633064965. The cubic root of 22750642 is about 283.3552207621.

The spelling of 22750642 in words is "twenty-two million, seven hundred fifty thousand, six hundred forty-two".