11287790 has 8 divisors (see below), whose sum is σ = 20318040. Its totient is φ = 4515112.

The previous prime is 11287769. The next prime is 11287799. The reversal of 11287790 is 9778211.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11287790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11287799) 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, 564380 + ... + 564399.

It is an arithmetic number, because the mean of its divisors is an integer number (2539755).

Almost surely, 2^11287790 is an apocalyptic number.

11287790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11287790 is a deficient number, since it is larger than the sum of its proper divisors (9030250).

11287790 is a wasteful number, since it uses less digits than its factorization.

11287790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128786.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 11287790 is about 3359.7306439654. The cubic root of 11287790 is about 224.3208492006.

The spelling of 11287790 in words is "eleven million, two hundred eighty-seven thousand, seven hundred ninety".