22190157 has 48 divisors (see below), whose sum is σ = 37739520. Its totient is φ = 12420000.

The previous prime is 22190131. The next prime is 22190167. The reversal of 22190157 is 75109122.

It is not a de Polignac number, because 22190157 - 2¹² = 22186061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22190157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22190167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88282 + ... + 88532.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^22190157 is an apocalyptic number.

It is an amenable number.

22190157 is a deficient number, since it is larger than the sum of its proper divisors (15549363).

22190157 is a wasteful number, since it uses less digits than its factorization.

22190157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 22190157 is about 4710.6429497469. The cubic root of 22190157 is about 281.0089323959.

Adding to 22190157 its reverse (75109122), we get a palindrome (97299279).

The spelling of 22190157 in words is "twenty-two million, one hundred ninety thousand, one hundred fifty-seven".