7881402 has 8 divisors (see below), whose sum is σ = 15762816. Its totient is φ = 2627132.

The previous prime is 7881373. The next prime is 7881487. The reversal of 7881402 is 2041887.

It is a sphenic number, since it is the product of 3 distinct primes.

7881402 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 7881402.

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 3 ways as a sum of consecutive naturals, for example, 656778 + ... + 656789.

It is an arithmetic number, because the mean of its divisors is an integer number (1970352).

Almost surely, 2^7881402 is an apocalyptic number.

7881402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7881402 is a wasteful number, since it uses less digits than its factorization.

7881402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313572.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 7881402 is about 2807.3834793273. The cubic root of 7881402 is about 199.0067588590.

The spelling of 7881402 in words is "seven million, eight hundred eighty-one thousand, four hundred two".