22061412 has 18 divisors (see below), whose sum is σ = 55766438. Its totient is φ = 7353792.

The previous prime is 22061411. The next prime is 22061419. The reversal of 22061412 is 21416022.

It can be written as a sum of positive squares in only one way, i.e., 12916836 + 9144576 = 3594^2 + 3024^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (22061411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306373 + ... + 306444.

Almost surely, 2^22061412 is an apocalyptic number.

It is an amenable number.

22061412 is an abundant number, since it is smaller than the sum of its proper divisors (33705026).

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

22061412 is a wasteful number, since it uses less digits than its factorization.

22061412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612827 (or 612822 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 22061412 is about 4696.9577387922. The cubic root of 22061412 is about 280.4644163541.

Adding to 22061412 its reverse (21416022), we get a palindrome (43477434).

The spelling of 22061412 in words is "twenty-two million, sixty-one thousand, four hundred twelve".