1228404 has 12 divisors (see below), whose sum is σ = 2866304. Its totient is φ = 409464.

The previous prime is 1228399. The next prime is 1228429. The reversal of 1228404 is 4048221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51172 + ... + 51195.

2^1228404 is an apocalyptic number.

It is an amenable number.

1228404 is an abundant number, since it is smaller than the sum of its proper divisors (1637900).

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

1228404 is a wasteful number, since it uses less digits than its factorization.

1228404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102374 (or 102372 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1228404 is about 1108.3338847116. Note that the first 3 decimals coincide. The cubic root of 1228404 is about 107.0977648981.

The spelling of 1228404 in words is "one million, two hundred twenty-eight thousand, four hundred four".