11381478 has 16 divisors (see below), whose sum is σ = 22880880. Its totient is φ = 3774176.

The previous prime is 11381471. The next prime is 11381479. The reversal of 11381478 is 87418311.

It is a super-3 number, since 3×11381478³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11381471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3633 + ... + 5996.

It is an arithmetic number, because the mean of its divisors is an integer number (1430055).

Almost surely, 2^11381478 is an apocalyptic number.

11381478 is an abundant number, since it is smaller than the sum of its proper divisors (11499402).

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

11381478 is a wasteful number, since it uses less digits than its factorization.

11381478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9831.

The product of its digits is 5376, while the sum is 33.

The square root of 11381478 is about 3373.6446167313. The cubic root of 11381478 is about 224.9397567109.

Adding to 11381478 its reverse (87418311), we get a palindrome (98799789).

The spelling of 11381478 in words is "eleven million, three hundred eighty-one thousand, four hundred seventy-eight".