22857961 has 9 divisors (see below), whose sum is σ = 26628861. Its totient is φ = 19563852.

The previous prime is 22857937. The next prime is 22857973. The reversal of 22857961 is 16975822.

The square root of 22857961 is 4781.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 22857961 - 2¹¹ = 22855913 is a prime.

It is a super-3 number, since 3×22857961³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22857761) 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 in 8 ways as a sum of consecutive naturals, for example, 33126 + ... + 33808.

Almost surely, 2^22857961 is an apocalyptic number.

22857961 is the 4781-st square number.

22857961 is the 2391-st centered octagonal number.

It is an amenable number.

22857961 is a deficient number, since it is larger than the sum of its proper divisors (3770900).

22857961 is an frugal number, since it uses more digits than its factorization.

22857961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380 (or 690 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The cubic root of 22857961 is about 283.8000684028.

The spelling of 22857961 in words is "twenty-two million, eight hundred fifty-seven thousand, nine hundred sixty-one".