11653890 has 32 divisors (see below), whose sum is σ = 28728000. Its totient is φ = 3023424.

The previous prime is 11653883. The next prime is 11653909. The reversal of 11653890 is 9835611.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4140 + ... + 6359.

It is an arithmetic number, because the mean of its divisors is an integer number (897750).

Almost surely, 2^11653890 is an apocalyptic number.

11653890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11653890 is an abundant number, since it is smaller than the sum of its proper divisors (17074110).

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

11653890 is a wasteful number, since it uses less digits than its factorization.

11653890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10546.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 11653890 is about 3413.7794304846. The cubic root of 11653890 is about 226.7202463688.

The spelling of 11653890 in words is "eleven million, six hundred fifty-three thousand, eight hundred ninety".