11401388 has 12 divisors (see below), whose sum is σ = 20279952. Its totient is φ = 5607120.

The previous prime is 11401381. The next prime is 11401391. The reversal of 11401388 is 88310411.

It is not an unprimeable number, because it can be changed into a prime (11401381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23120 + ... + 23607.

It is an arithmetic number, because the mean of its divisors is an integer number (1689996).

Almost surely, 2^11401388 is an apocalyptic number.

It is an amenable number.

11401388 is a deficient number, since it is larger than the sum of its proper divisors (8878564).

11401388 is a wasteful number, since it uses less digits than its factorization.

11401388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46792 (or 46790 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 11401388 is about 3376.5941420313. The cubic root of 11401388 is about 225.0708451805.

Adding to 11401388 its reverse (88310411), we get a palindrome (99711799).

The spelling of 11401388 in words is "eleven million, four hundred one thousand, three hundred eighty-eight".