1623244 has 12 divisors (see below), whose sum is σ = 3246544. Its totient is φ = 695664.

The previous prime is 1623233. The next prime is 1623263. The reversal of 1623244 is 4423261.

1623244 = 2² + 3² + ... + 169².

It is a happy number.

1623244 is an admirable number.

It is a d-powerful number, because it can be written as 1 + 6³ + 2⁵ + 3¹³ + 2¹³ + 4⁶ + 4⁷ .

It is a plaindrome in base 13.

It is a zygodrome in base 13.

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, 28959 + ... + 29014.

2^1623244 is an apocalyptic number.

1623244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1623244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1623244 is a wasteful number, since it uses less digits than its factorization.

1623244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57984 (or 57982 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 1623244 is about 1274.0659323599. The cubic root of 1623244 is about 117.5243709822.

The spelling of 1623244 in words is "one million, six hundred twenty-three thousand, two hundred forty-four".