11429780 has 24 divisors (see below), whose sum is σ = 25415208. Its totient is φ = 4302848.

The previous prime is 11429779. The next prime is 11429783. The reversal of 11429780 is 8792411.

It can be written as a sum of positive squares in 4 ways, for example, as 749956 + 10679824 = 866^2 + 3268^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11429783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16469 + ... + 17148.

It is an arithmetic number, because the mean of its divisors is an integer number (1058967).

Almost surely, 2^11429780 is an apocalyptic number.

11429780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11429780 is an abundant number, since it is smaller than the sum of its proper divisors (13985428).

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

11429780 is a wasteful number, since it uses less digits than its factorization.

11429780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33643 (or 33641 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 11429780 is about 3380.7957643135. The cubic root of 11429780 is about 225.2575158564.

The spelling of 11429780 in words is "eleven million, four hundred twenty-nine thousand, seven hundred eighty".