13620988 has 6 divisors (see below), whose sum is σ = 23836736. Its totient is φ = 6810492.

The previous prime is 13620949. The next prime is 13621001. The reversal of 13620988 is 88902631.

It is a super-2 number, since 2×13620988² = 371062628192288, 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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1702620 + ... + 1702627.

Almost surely, 2^13620988 is an apocalyptic number.

It is an amenable number.

13620988 is a deficient number, since it is larger than the sum of its proper divisors (10215748).

13620988 is a wasteful number, since it uses less digits than its factorization.

13620988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405251 (or 3405249 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 13620988 is about 3690.6622711920. The cubic root of 13620988 is about 238.8193636348.

The spelling of 13620988 in words is "thirteen million, six hundred twenty thousand, nine hundred eighty-eight".