6222428 has 6 divisors (see below), whose sum is σ = 10889256. Its totient is φ = 3111212.

The previous prime is 6222421. The next prime is 6222439. The reversal of 6222428 is 8242226.

It is a super-2 number, since 2×6222428² = 77437220430368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6222397 and 6222406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6222421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777800 + ... + 777807.

It is an arithmetic number, because the mean of its divisors is an integer number (1814876).

Almost surely, 2^6222428 is an apocalyptic number.

It is an amenable number.

6222428 is a deficient number, since it is larger than the sum of its proper divisors (4666828).

6222428 is a wasteful number, since it uses less digits than its factorization.

6222428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555611 (or 1555609 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 6222428 is about 2494.4795048266. The cubic root of 6222428 is about 183.9303059934.

The spelling of 6222428 in words is "six million, two hundred twenty-two thousand, four hundred twenty-eight".