7980420 has 48 divisors (see below), whose sum is σ = 25538688. Its totient is φ = 1824000.

The previous prime is 7980409. The next prime is 7980431. The reversal of 7980420 is 240897.

It is an interprime number because it is at equal distance from previous prime (7980409) and next prime (7980431).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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

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 15 ways as a sum of consecutive naturals, for example, 9081 + ... + 9920.

It is an arithmetic number, because the mean of its divisors is an integer number (532056).

Almost surely, 2^7980420 is an apocalyptic number.

7980420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7980420 is an abundant number, since it is smaller than the sum of its proper divisors (17558268).

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

7980420 is a wasteful number, since it uses less digits than its factorization.

7980420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19020 (or 19018 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 7980420 is about 2824.9637165812. The cubic root of 7980420 is about 199.8367000352.

The spelling of 7980420 in words is "seven million, nine hundred eighty thousand, four hundred twenty".