13620250 has 64 divisors (see below), whose sum is σ = 29981952. Its totient is φ = 4536000.

The previous prime is 13620223. The next prime is 13620287. The reversal of 13620250 is 5202631.

It is a happy number.

It is a super-2 number, since 2×13620250² = 371022420125000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75160 + ... + 75340.

It is an arithmetic number, because the mean of its divisors is an integer number (468468).

Almost surely, 2^13620250 is an apocalyptic number.

13620250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13620250 is an abundant number, since it is smaller than the sum of its proper divisors (16361702).

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

13620250 is a wasteful number, since it uses less digits than its factorization.

13620250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13620250 is about 3690.5622877822. The cubic root of 13620250 is about 238.8150503923.

Adding to 13620250 its reverse (5202631), we get a palindrome (18822881).

The spelling of 13620250 in words is "thirteen million, six hundred twenty thousand, two hundred fifty".