11890620 has 72 divisors (see below), whose sum is σ = 41225184. Its totient is φ = 2717568.

The previous prime is 11890601. The next prime is 11890621. The reversal of 11890620 is 2609811.

11890620 = T₁₄₀ + T₁₄₁ + ... + T₄₁₉.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11890621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3459 + ... + 5978.

It is an arithmetic number, because the mean of its divisors is an integer number (572572).

Almost surely, 2^11890620 is an apocalyptic number.

11890620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11890620 is an abundant number, since it is smaller than the sum of its proper divisors (29334564).

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

11890620 is a wasteful number, since it uses less digits than its factorization.

11890620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9459 (or 9454 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 11890620 is about 3448.2778310339. The cubic root of 11890620 is about 228.2451195758.

The spelling of 11890620 in words is "eleven million, eight hundred ninety thousand, six hundred twenty".