13697040 has 160 divisors (see below), whose sum is σ = 50282496. Its totient is φ = 3018240.

The previous prime is 13697023. The next prime is 13697041. The reversal of 13697040 is 4079631.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 13696989 and 13697007.

It is not an unprimeable number, because it can be changed into a prime (13697041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51949 + ... + 52211.

Almost surely, 2^13697040 is an apocalyptic number.

13697040 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 13697040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25141248).

13697040 is an abundant number, since it is smaller than the sum of its proper divisors (36585456).

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

13697040 is a wasteful number, since it uses less digits than its factorization.

13697040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 311 counting only the distinct ones).

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

The square root of 13697040 is about 3700.9512290761. The cubic root of 13697040 is about 239.2630169945.

The spelling of 13697040 in words is "thirteen million, six hundred ninety-seven thousand, forty".