1623268 has 6 divisors (see below), whose sum is σ = 2840726. Its totient is φ = 811632.

The previous prime is 1623263. The next prime is 1623269. The reversal of 1623268 is 8623261.

It can be written as a sum of positive squares in only one way, i.e., 996004 + 627264 = 998^2 + 792^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1623263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202905 + ... + 202912.

2^1623268 is an apocalyptic number.

It is an amenable number.

1623268 is a deficient number, since it is larger than the sum of its proper divisors (1217458).

1623268 is a wasteful number, since it uses less digits than its factorization.

1623268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405821 (or 405819 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 1623268 is about 1274.0753509899. The cubic root of 1623268 is about 117.5249501868.

It can be divided in two parts, 1623 and 268, that added together give a triangular number (1891 = T₆₁).

The spelling of 1623268 in words is "one million, six hundred twenty-three thousand, two hundred sixty-eight".