1623200 has 36 divisors (see below), whose sum is σ = 3964590. Its totient is φ = 648960.

The previous prime is 1623197. The next prime is 1623203. The reversal of 1623200 is 23261.

It is an interprime number because it is at equal distance from previous prime (1623197) and next prime (1623203).

It can be written as a sum of positive squares in 3 ways, for example, as 1567504 + 55696 = 1252^2 + 236^2 .

It is not an unprimeable number, because it can be changed into a prime (1623203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215 + ... + 1814.

2^1623200 is an apocalyptic number.

1623200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1623200 is an abundant number, since it is smaller than the sum of its proper divisors (2341390).

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

1623200 is a wasteful number, since it uses less digits than its factorization.

1623200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049 (or 2036 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1623200 is about 1274.0486646906. The cubic root of 1623200 is about 117.5233090924.

Adding to 1623200 its reverse (23261), we get a palindrome (1646461).

It can be divided in two parts, 162 and 3200, that multiplied together give a square (518400 = 720²).

The spelling of 1623200 in words is "one million, six hundred twenty-three thousand, two hundred".