11285890 has 32 divisors (see below), whose sum is σ = 25329024. Its totient is φ = 3517440.

The previous prime is 11285881. The next prime is 11285899. The reversal of 11285890 is 9858211.

It is an interprime number because it is at equal distance from previous prime (11285881) and next prime (11285899).

It is not an unprimeable number, because it can be changed into a prime (11285899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6559 + ... + 8098.

It is an arithmetic number, because the mean of its divisors is an integer number (791532).

Almost surely, 2^11285890 is an apocalyptic number.

11285890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11285890 is an abundant number, since it is smaller than the sum of its proper divisors (14043134).

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

11285890 is a wasteful number, since it uses less digits than its factorization.

11285890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14682.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 11285890 is about 3359.4478713027. The cubic root of 11285890 is about 224.3082623396.

The spelling of 11285890 in words is "eleven million, two hundred eighty-five thousand, eight hundred ninety".