22400061 has 8 divisors (see below), whose sum is σ = 29892384. Its totient is φ = 14920560.

The previous prime is 22400057. The next prime is 22400071. The reversal of 22400061 is 16000422.

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

It is not a de Polignac number, because 22400061 - 2² = 22400057 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22400061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22400041) 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, 2155 + ... + 7031.

It is an arithmetic number, because the mean of its divisors is an integer number (3736548).

Almost surely, 2^22400061 is an apocalyptic number.

It is an amenable number.

22400061 is a deficient number, since it is larger than the sum of its proper divisors (7492323).

22400061 is a wasteful number, since it uses less digits than its factorization.

22400061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6411.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 22400061 is about 4732.8702707765. The cubic root of 22400061 is about 281.8922051664.

Adding to 22400061 its reverse (16000422), we get a palindrome (38400483).

The spelling of 22400061 in words is "twenty-two million, four hundred thousand, sixty-one".