22651450 has 12 divisors (see below), whose sum is σ = 42131790. Its totient is φ = 9060560.

The previous prime is 22651441. The next prime is 22651459. The reversal of 22651450 is 5415622.

It is an interprime number because it is at equal distance from previous prime (22651441) and next prime (22651459).

It can be written as a sum of positive squares in 3 ways, for example, as 22099401 + 552049 = 4701^2 + 743^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (22651459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 226465 + ... + 226564.

Almost surely, 2^22651450 is an apocalyptic number.

22651450 is a deficient number, since it is larger than the sum of its proper divisors (19480340).

22651450 is a wasteful number, since it uses less digits than its factorization.

22651450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453041 (or 453036 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 22651450 is about 4759.3539477538. The cubic root of 22651450 is about 282.9428145513.

The spelling of 22651450 in words is "twenty-two million, six hundred fifty-one thousand, four hundred fifty".