4012840920 has 128 divisors (see below), whose sum is σ = 13488042240. Its totient is φ = 946506240.

The previous prime is 4012840891. The next prime is 4012840933. The reversal of 4012840920 is 290482104.

It is a super-2 number, since 2×4012840920² = 32205784498452892800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7759 + ... + 89921.

It is an arithmetic number, because the mean of its divisors is an integer number (105375330).

Almost surely, 2^4012840920 is an apocalyptic number.

4012840920 is a gapful number since it is divisible by the number (40) 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 4012840920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6744021120).

4012840920 is an abundant number, since it is smaller than the sum of its proper divisors (9475201320).

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

4012840920 is a wasteful number, since it uses less digits than its factorization.

4012840920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82225 (or 82221 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 4012840920 is about 63346.9882472719. The cubic root of 4012840920 is about 1589.0978783535.

The spelling of 4012840920 in words is "four billion, twelve million, eight hundred forty thousand, nine hundred twenty".