13430988 has 48 divisors (see below), whose sum is σ = 36341760. Its totient is φ = 4281552.

The previous prime is 13430981. The next prime is 13430993. The reversal of 13430988 is 88903431.

13430988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13430988² = 360782877312288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (13430981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220 + ... + 5187.

It is an arithmetic number, because the mean of its divisors is an integer number (757120).

Almost surely, 2^13430988 is an apocalyptic number.

13430988 is a gapful number since it is divisible by the number (18) 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 13430988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18170880).

13430988 is an abundant number, since it is smaller than the sum of its proper divisors (22910772).

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

13430988 is a wasteful number, since it uses less digits than its factorization.

13430988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5443 (or 5435 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 13430988 is about 3664.8312375879. The cubic root of 13430988 is about 237.7037247356.

The spelling of 13430988 in words is "thirteen million, four hundred thirty thousand, nine hundred eighty-eight".