22012454 has 8 divisors (see below), whose sum is σ = 33271128. Its totient is φ = 10922080.

The previous prime is 22012453. The next prime is 22012483. The reversal of 22012454 is 45421022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22012454² = 969096262204232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012451) 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 3 ways as a sum of consecutive naturals, for example, 41747 + ... + 42270.

It is an arithmetic number, because the mean of its divisors is an integer number (4158891).

Almost surely, 2^22012454 is an apocalyptic number.

22012454 is a deficient number, since it is larger than the sum of its proper divisors (11258674).

22012454 is a wasteful number, since it uses less digits than its factorization.

22012454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84150.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 22012454 is about 4691.7431728516. The cubic root of 22012454 is about 280.2567967246.

Adding to 22012454 its reverse (45421022), we get a palindrome (67433476).

The spelling of 22012454 in words is "twenty-two million, twelve thousand, four hundred fifty-four".