7812980 has 24 divisors (see below), whose sum is σ = 18751488. Its totient is φ = 2678688.

The previous prime is 7812967. The next prime is 7812983. The reversal of 7812980 is 892187.

It is a happy number.

It is a super-2 number, since 2×7812980² = 122085312960800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 7812980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7812983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27764 + ... + 28043.

It is an arithmetic number, because the mean of its divisors is an integer number (781312).

Almost surely, 2^7812980 is an apocalyptic number.

7812980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7812980 is an abundant number, since it is smaller than the sum of its proper divisors (10938508).

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

7812980 is a wasteful number, since it uses less digits than its factorization.

7812980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55823 (or 55821 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 7812980 is about 2795.1708355662. The cubic root of 7812980 is about 198.4291951595.

The spelling of 7812980 in words is "seven million, eight hundred twelve thousand, nine hundred eighty".