11890515 has 64 divisors (see below), whose sum is σ = 24256512. Its totient is φ = 4838400.

The previous prime is 11890511. The next prime is 11890553. The reversal of 11890515 is 51509811.

It is not a de Polignac number, because 11890515 - 2² = 11890511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11890511) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42175 + ... + 42455.

It is an arithmetic number, because the mean of its divisors is an integer number (379008).

Almost surely, 2^11890515 is an apocalyptic number.

11890515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11890515 is an abundant number, since it is smaller than the sum of its proper divisors (12365997).

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

11890515 is a wasteful number, since it uses less digits than its factorization.

11890515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340.

The product of its (nonzero) digits is 1800, while the sum is 30.

The square root of 11890515 is about 3448.2626060090. The cubic root of 11890515 is about 228.2444477351.

The spelling of 11890515 in words is "eleven million, eight hundred ninety thousand, five hundred fifteen".