20074860 has 144 divisors (see below), whose sum is σ = 68612544. Its totient is φ = 4713984.

The previous prime is 20074843. The next prime is 20074907. The reversal of 20074860 is 6847002.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 53634 + ... + 54006.

It is an arithmetic number, because the mean of its divisors is an integer number (476476).

Almost surely, 2^20074860 is an apocalyptic number.

20074860 is a gapful number since it is divisible by the number (20) 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 20074860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34306272).

20074860 is an abundant number, since it is smaller than the sum of its proper divisors (48537684).

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

20074860 is a wasteful number, since it uses less digits than its factorization.

20074860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20074860 is about 4480.4977402070. The cubic root of 20074860 is about 271.7800088281.

The spelling of 20074860 in words is "twenty million, seventy-four thousand, eight hundred sixty".