1236428 has 6 divisors (see below), whose sum is σ = 2163756. Its totient is φ = 618212.

The previous prime is 1236419. The next prime is 1236439. The reversal of 1236428 is 8246321.

It is a junction number, because it is equal to n+sod(n) for n = 1236397 and 1236406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154550 + ... + 154557.

It is an arithmetic number, because the mean of its divisors is an integer number (360626).

2^1236428 is an apocalyptic number.

It is an amenable number.

1236428 is a deficient number, since it is larger than the sum of its proper divisors (927328).

1236428 is a wasteful number, since it uses less digits than its factorization.

1236428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309111 (or 309109 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 1236428 is about 1111.9478405033. The cubic root of 1236428 is about 107.3304484220.

The spelling of 1236428 in words is "one million, two hundred thirty-six thousand, four hundred twenty-eight".