240621012 has 36 divisors (see below), whose sum is σ = 621182016. Its totient is φ = 78499920.

The previous prime is 240620983. The next prime is 240621019. The reversal of 240621012 is 210126042.

240621012 is a `hidden beast` number, since 2 + 40 + 621 + 0 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240621019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69414 + ... + 72797.

It is an arithmetic number, because the mean of its divisors is an integer number (17255056).

Almost surely, 2^240621012 is an apocalyptic number.

It is an amenable number.

240621012 is an abundant number, since it is smaller than the sum of its proper divisors (380561004).

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

240621012 is a wasteful number, since it uses less digits than its factorization.

240621012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142268 (or 142263 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 240621012 is about 15511.9635120767. The cubic root of 240621012 is about 621.9820475031.

Adding to 240621012 its reverse (210126042), we get a palindrome (450747054).

The spelling of 240621012 in words is "two hundred forty million, six hundred twenty-one thousand, twelve".