13449020 has 72 divisors (see below), whose sum is σ = 32096736. Its totient is φ = 4722432.

The previous prime is 13449001. The next prime is 13449047. The reversal of 13449020 is 2094431.

It is a super-2 number, since 2×13449020² = 361752277920800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

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, 77654 + ... + 77826.

It is an arithmetic number, because the mean of its divisors is an integer number (445788).

Almost surely, 2^13449020 is an apocalyptic number.

13449020 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 13449020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16048368).

13449020 is an abundant number, since it is smaller than the sum of its proper divisors (18647716).

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

13449020 is a wasteful number, since it uses less digits than its factorization.

13449020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 13449020 is about 3667.2905529832. The cubic root of 13449020 is about 237.8100548828.

The spelling of 13449020 in words is "thirteen million, four hundred forty-nine thousand, twenty".