21952294 has 24 divisors (see below), whose sum is σ = 41253408. Its totient is φ = 8683920.

The previous prime is 21952291. The next prime is 21952297. The reversal of 21952294 is 49225912.

It is an interprime number because it is at equal distance from previous prime (21952291) and next prime (21952297).

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21952291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7342 + ... + 9889.

It is an arithmetic number, because the mean of its divisors is an integer number (1718892).

Almost surely, 2^21952294 is an apocalyptic number.

21952294 is a deficient number, since it is larger than the sum of its proper divisors (19301114).

21952294 is a wasteful number, since it uses less digits than its factorization.

21952294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17260 (or 17253 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 21952294 is about 4685.3275232368. The cubic root of 21952294 is about 280.0012499944.

It can be divided in two parts, 2195 and 2294, that added together give a square (4489 = 67²).

The spelling of 21952294 in words is "twenty-one million, nine hundred fifty-two thousand, two hundred ninety-four".