22077428 has 12 divisors (see below), whose sum is σ = 38701152. Its totient is φ = 11019960.

The previous prime is 22077427. The next prime is 22077431. The reversal of 22077428 is 82477022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22077394 and 22077403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22077427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1850 + ... + 6897.

It is an arithmetic number, because the mean of its divisors is an integer number (3225096).

Almost surely, 2^22077428 is an apocalyptic number.

It is an amenable number.

22077428 is a deficient number, since it is larger than the sum of its proper divisors (16623724).

22077428 is a wasteful number, since it uses less digits than its factorization.

22077428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9382 (or 9380 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 22077428 is about 4698.6623628433. The cubic root of 22077428 is about 280.5322698461.

The spelling of 22077428 in words is "twenty-two million, seventy-seven thousand, four hundred twenty-eight".