1022406 has 32 divisors (see below), whose sum is σ = 2550528. Its totient is φ = 265440.

The previous prime is 1022389. The next prime is 1022429. The reversal of 1022406 is 6042201.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645 + ... + 1568.

It is an arithmetic number, because the mean of its divisors is an integer number (79704).

2^1022406 is an apocalyptic number.

1022406 is an abundant number, since it is smaller than the sum of its proper divisors (1528122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022406 is a wasteful number, since it uses less digits than its factorization.

1022406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236.

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

The square root of 1022406 is about 1011.1409397310. The cubic root of 1022406 is about 100.7413569830.

Adding to 1022406 its reverse (6042201), we get a palindrome (7064607).

The spelling of 1022406 in words is "one million, twenty-two thousand, four hundred six".