22154136 has 32 divisors (see below), whose sum is σ = 55909440. Its totient is φ = 7314848.

The previous prime is 22154131. The next prime is 22154137. The reversal of 22154136 is 63145122.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22154131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1746 + ... + 6881.

It is an arithmetic number, because the mean of its divisors is an integer number (1747170).

Almost surely, 2^22154136 is an apocalyptic number.

It is an amenable number.

22154136 is an abundant number, since it is smaller than the sum of its proper divisors (33755304).

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

22154136 is a wasteful number, since it uses less digits than its factorization.

22154136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8743 (or 8739 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 22154136 is about 4706.8180334489. The cubic root of 22154136 is about 280.8567973030.

Adding to 22154136 its reverse (63145122), we get a palindrome (85299258).

The spelling of 22154136 in words is "twenty-two million, one hundred fifty-four thousand, one hundred thirty-six".