22700142 has 32 divisors (see below), whose sum is σ = 51680160. Its totient is φ = 7381440.

The previous prime is 22700141. The next prime is 22700147. The reversal of 22700142 is 24100722.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22700141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2913 + ... + 7340.

It is an arithmetic number, because the mean of its divisors is an integer number (1615005).

Almost surely, 2^22700142 is an apocalyptic number.

22700142 is an abundant number, since it is smaller than the sum of its proper divisors (28980018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22700142 is a wasteful number, since it uses less digits than its factorization.

22700142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10305 (or 10299 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 22700142 is about 4764.4666018349. The cubic root of 22700142 is about 283.1454092563.

Adding to 22700142 its reverse (24100722), we get a palindrome (46800864).

The spelling of 22700142 in words is "twenty-two million, seven hundred thousand, one hundred forty-two".