13097784 has 64 divisors (see below), whose sum is σ = 38154240. Its totient is φ = 3669120.

The previous prime is 13097771. The next prime is 13097797. The reversal of 13097784 is 48779031.

It is an interprime number because it is at equal distance from previous prime (13097771) and next prime (13097797).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8169 + ... + 9639.

It is an arithmetic number, because the mean of its divisors is an integer number (596160).

Almost surely, 2^13097784 is an apocalyptic number.

13097784 is a gapful number since it is divisible by the number (14) 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 13097784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19077120).

13097784 is an abundant number, since it is smaller than the sum of its proper divisors (25056456).

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

13097784 is a wasteful number, since it uses less digits than its factorization.

13097784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540 (or 1536 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 13097784 is about 3619.0860724774. The cubic root of 13097784 is about 235.7215426862.

The spelling of 13097784 in words is "thirteen million, ninety-seven thousand, seven hundred eighty-four".