11156398 has 8 divisors (see below), whose sum is σ = 18255960. Its totient is φ = 5071080.

The previous prime is 11156381. The next prime is 11156399. The reversal of 11156398 is 89365111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11156399) 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, 253533 + ... + 253576.

It is an arithmetic number, because the mean of its divisors is an integer number (2281995).

Almost surely, 2^11156398 is an apocalyptic number.

11156398 is a deficient number, since it is larger than the sum of its proper divisors (7099562).

11156398 is a wasteful number, since it uses less digits than its factorization.

11156398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507122.

The product of its digits is 6480, while the sum is 34.

The square root of 11156398 is about 3340.1194589416. The cubic root of 11156398 is about 223.4470710980.

The spelling of 11156398 in words is "eleven million, one hundred fifty-six thousand, three hundred ninety-eight".