1226992 has 40 divisors (see below), whose sum is σ = 2718576. Its totient is φ = 531456.

The previous prime is 1226983. The next prime is 1226993. The reversal of 1226992 is 2996221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226993) 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, 3363 + ... + 3709.

2^1226992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359288).

1226992 is an abundant number, since it is smaller than the sum of its proper divisors (1491584).

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

1226992 is a wasteful number, since it uses less digits than its factorization.

1226992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 379 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 1226992 is about 1107.6967093930. The cubic root of 1226992 is about 107.0567143365.

Subtracting from 1226992 its sum of digits (31), we obtain a triangular number (1226961 = T₁₅₆₆).

The spelling of 1226992 in words is "one million, two hundred twenty-six thousand, nine hundred ninety-two".