11157890 has 8 divisors (see below), whose sum is σ = 20084220. Its totient is φ = 4463152.

The previous prime is 11157889. The next prime is 11157917. The reversal of 11157890 is 9875111.

It can be written as a sum of positive squares in 2 ways, for example, as 11015761 + 142129 = 3319^2 + 377^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557885 + ... + 557904.

Almost surely, 2^11157890 is an apocalyptic number.

11157890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11157890 is a deficient number, since it is larger than the sum of its proper divisors (8926330).

11157890 is a wasteful number, since it uses less digits than its factorization.

11157890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115796.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 11157890 is about 3340.3427967800. The cubic root of 11157890 is about 223.4570315461.

The spelling of 11157890 in words is "eleven million, one hundred fifty-seven thousand, eight hundred ninety".