7890120 has 192 divisors, whose sum is σ = 30551040. Its totient is φ = 1728000.

The previous prime is 7890119. The next prime is 7890137. The reversal of 7890120 is 210987.

7890120 = T₁₅₅ + T₁₅₆ + ... + T₃₇₀.

It is a super-2 number, since 2×7890120² = 124507987228800, which contains 22 as substring.

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, 78070 + ... + 78170.

It is an arithmetic number, because the mean of its divisors is an integer number (159120).

Almost surely, 2^7890120 is an apocalyptic number.

7890120 is a gapful number since it is divisible by the number (70) 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 7890120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15275520).

7890120 is an abundant number, since it is smaller than the sum of its proper divisors (22660920).

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

7890120 is a wasteful number, since it uses less digits than its factorization.

7890120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 7890120 is about 2808.9357415220. The cubic root of 7890120 is about 199.0801088212.

The spelling of 7890120 in words is "seven million, eight hundred ninety thousand, one hundred twenty".