1228623 has 16 divisors (see below), whose sum is σ = 1846272. Its totient is φ = 720000.

The previous prime is 1228613. The next prime is 1228631. The reversal of 1228623 is 3268221.

It is a de Polignac number, because none of the positive numbers 2^k-1228623 is a prime.

It is a super-2 number, since 2×1228623² = 3019028952258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1228593 and 1228602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (115392).

2^1228623 is an apocalyptic number.

1228623 is a deficient number, since it is larger than the sum of its proper divisors (617649).

1228623 is a wasteful number, since it uses less digits than its factorization.

1228623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246.

The product of its digits is 1152, while the sum is 24.

The square root of 1228623 is about 1108.4326772520. The cubic root of 1228623 is about 107.1041289870.

The spelling of 1228623 in words is "one million, two hundred twenty-eight thousand, six hundred twenty-three".