22400408 has 8 divisors (see below), whose sum is σ = 42000780. Its totient is φ = 11200200.

The previous prime is 22400369. The next prime is 22400419. The reversal of 22400408 is 80400422.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 22400408.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1400018 + ... + 1400033.

Almost surely, 2^22400408 is an apocalyptic number.

It is an amenable number.

22400408 is a deficient number, since it is larger than the sum of its proper divisors (19600372).

22400408 is a wasteful number, since it uses less digits than its factorization.

22400408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800057 (or 2800053 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 22400408 is about 4732.9069291504. The cubic root of 22400408 is about 281.8936607590.

The spelling of 22400408 in words is "twenty-two million, four hundred thousand, four hundred eight".