13142388 has 96 divisors (see below), whose sum is σ = 37273600. Its totient is φ = 3598560.

The previous prime is 13142369. The next prime is 13142401. The reversal of 13142388 is 88324131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127545 + ... + 127647.

Almost surely, 2^13142388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13142388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18636800).

13142388 is an abundant number, since it is smaller than the sum of its proper divisors (24131212).

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

13142388 is a wasteful number, since it uses less digits than its factorization.

13142388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 146 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 13142388 is about 3625.2431642581. The cubic root of 13142388 is about 235.9888197327.

It can be divided in two parts, 13142 and 388, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 13142388 in words is "thirteen million, one hundred forty-two thousand, three hundred eighty-eight".