13649700 has 72 divisors (see below), whose sum is σ = 39872448. Its totient is φ = 3605120.

The previous prime is 13649689. The next prime is 13649711. The reversal of 13649700 is 794631.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13649689) and next prime (13649711).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51769 + ... + 52031.

It is an arithmetic number, because the mean of its divisors is an integer number (553784).

Almost surely, 2^13649700 is an apocalyptic number.

13649700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13649700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19936224).

13649700 is an abundant number, since it is smaller than the sum of its proper divisors (26222748).

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

13649700 is a wasteful number, since it uses less digits than its factorization.

13649700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 13649700 is about 3694.5500402620. The cubic root of 13649700 is about 238.9870501786.

The spelling of 13649700 in words is "thirteen million, six hundred forty-nine thousand, seven hundred".