6215036940 has 144 divisors (see below), whose sum is σ = 21616987392. Its totient is φ = 1415864448.

The previous prime is 6215036917. The next prime is 6215036959. The reversal of 6215036940 is 496305126.

It is a happy number.

6215036940 is a `hidden beast` number, since 62 + 1 + 503 + 6 + 94 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6215036895 and 6215036904.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 378787 + ... + 394853.

It is an arithmetic number, because the mean of its divisors is an integer number (150117968).

Almost surely, 2^6215036940 is an apocalyptic number.

6215036940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6215036940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10808493696).

6215036940 is an abundant number, since it is smaller than the sum of its proper divisors (15401950452).

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

6215036940 is a wasteful number, since it uses less digits than its factorization.

6215036940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16396 (or 16391 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6215036940 is about 78835.5055796562. The cubic root of 6215036940 is about 1838.5745240980.

The spelling of 6215036940 in words is "six billion, two hundred fifteen million, thirty-six thousand, nine hundred forty".