11840445 has 32 divisors (see below), whose sum is σ = 21196800. Its totient is φ = 6270912.

The previous prime is 11840443. The next prime is 11840447. The reversal of 11840445 is 54404811.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11840443) and next prime (11840447).

It is not a de Polignac number, because 11840445 - 2¹ = 11840443 is a prime.

It is a super-2 number, since 2×11840445² = 280392275596050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11840443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30724 + ... + 31106.

It is an arithmetic number, because the mean of its divisors is an integer number (662400).

Almost surely, 2^11840445 is an apocalyptic number.

11840445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11840445 is a deficient number, since it is larger than the sum of its proper divisors (9356355).

11840445 is a wasteful number, since it uses less digits than its factorization.

11840445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 11840445 is about 3440.9947689585. The cubic root of 11840445 is about 227.9236240027.

It can be divided in two parts, 11 and 840445, that added together give a triangular number (840456 = T₁₂₉₆).

The spelling of 11840445 in words is "eleven million, eight hundred forty thousand, four hundred forty-five".