13620330 has 24 divisors (see below), whose sum is σ = 35413092. Its totient is φ = 3632064.

The previous prime is 13620317. The next prime is 13620407. The reversal of 13620330 is 3302631.

It is a happy number.

13620330 is a `hidden beast` number, since 13 + 620 + 3 + 30 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12341169 + 1279161 = 3513^2 + 1131^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75579 + ... + 75758.

Almost surely, 2^13620330 is an apocalyptic number.

13620330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13620330 is an abundant number, since it is smaller than the sum of its proper divisors (21792762).

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

13620330 is a wasteful number, since it uses less digits than its factorization.

13620330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151350 (or 151347 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 13620330 is about 3690.5731262231. The cubic root of 13620330 is about 238.8155179599.

Adding to 13620330 its reverse (3302631), we get a palindrome (16922961).

The spelling of 13620330 in words is "thirteen million, six hundred twenty thousand, three hundred thirty".