13491700 has 18 divisors (see below), whose sum is σ = 29277206. Its totient is φ = 5396640.

The previous prime is 13491697. The next prime is 13491703. The reversal of 13491700 is 719431.

It is an interprime number because it is at equal distance from previous prime (13491697) and next prime (13491703).

It can be written as a sum of positive squares in 3 ways, for example, as 3794704 + 9696996 = 1948^2 + 3114^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13491703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67359 + ... + 67558.

Almost surely, 2^13491700 is an apocalyptic number.

13491700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13491700 is an abundant number, since it is smaller than the sum of its proper divisors (15785506).

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

13491700 is a wasteful number, since it uses less digits than its factorization.

13491700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134931 (or 134924 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 13491700 is about 3673.1049535781. The cubic root of 13491700 is about 238.0613499071.

It can be divided in two parts, 13 and 491700, that multiplied together give a triangular number (6392100 = T₃₅₇₅).

The spelling of 13491700 in words is "thirteen million, four hundred ninety-one thousand, seven hundred".