11445780 has 24 divisors (see below), whose sum is σ = 32048352. Its totient is φ = 3052192.

The previous prime is 11445779. The next prime is 11445781. The reversal of 11445780 is 8754411.

It is an interprime number because it is at equal distance from previous prime (11445779) and next prime (11445781).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11445781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95322 + ... + 95441.

It is an arithmetic number, because the mean of its divisors is an integer number (1335348).

Almost surely, 2^11445780 is an apocalyptic number.

11445780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11445780 is an abundant number, since it is smaller than the sum of its proper divisors (20602572).

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

11445780 is a wasteful number, since it uses less digits than its factorization.

11445780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190775 (or 190773 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 11445780 is about 3383.1612435709. The cubic root of 11445780 is about 225.3625759076.

The spelling of 11445780 in words is "eleven million, four hundred forty-five thousand, seven hundred eighty".