11642940 has 60 divisors (see below), whose sum is σ = 36529416. Its totient is φ = 3104352.

The previous prime is 11642933. The next prime is 11642947. The reversal of 11642940 is 4924611.

11642940 is a `hidden beast` number, since 11 + 642 + 9 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (11642933) and next prime (11642947).

It is a tau number, because it is divible by the number of its divisors (60).

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 (11642947) 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 19 ways as a sum of consecutive naturals, for example, 1974 + ... + 5213.

Almost surely, 2^11642940 is an apocalyptic number.

11642940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11642940 is an abundant number, since it is smaller than the sum of its proper divisors (24886476).

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

11642940 is a wasteful number, since it uses less digits than its factorization.

11642940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7208 (or 7197 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 11642940 is about 3412.1752592738. The cubic root of 11642940 is about 226.6492153039.

The spelling of 11642940 in words is "eleven million, six hundred forty-two thousand, nine hundred forty".