3890156808720 has 640 divisors, whose sum is σ = 15167679206400. Its totient is φ = 819570769920.

The previous prime is 3890156808691. The next prime is 3890156808731. The reversal of 3890156808720 is 278086510983.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 852915240 + ... + 852919800.

It is an arithmetic number, because the mean of its divisors is an integer number (23699498760).

Almost surely, 2^{3890156808720} is an apocalyptic number.

3890156808720 is a gapful number since it is divisible by the number (30) 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 3890156808720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7583839603200).

3890156808720 is an abundant number, since it is smaller than the sum of its proper divisors (11277522397680).

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

3890156808720 is a wasteful number, since it uses less digits than its factorization.

3890156808720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5408 (or 5388 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 3890156808720 in words is "three trillion, eight hundred ninety billion, one hundred fifty-six million, eight hundred eight thousand, seven hundred twenty".