7872578 has 24 divisors (see below), whose sum is σ = 14121408. Its totient is φ = 3224232.

The previous prime is 7872577. The next prime is 7872583. The reversal of 7872578 is 8752787.

It is a d-powerful number, because it can be written as 7 + 8⁴ + 7⁴ + 2²¹ + 5² + 7⁸ + 8⁴ .

It is not an unprimeable number, because it can be changed into a prime (7872577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6875 + ... + 7937.

It is an arithmetic number, because the mean of its divisors is an integer number (588392).

Almost surely, 2^7872578 is an apocalyptic number.

7872578 is a deficient number, since it is larger than the sum of its proper divisors (6248830).

7872578 is a wasteful number, since it uses less digits than its factorization.

7872578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 1095 counting only the distinct ones).

The product of its digits is 219520, while the sum is 44.

The square root of 7872578 is about 2805.8114690763. The cubic root of 7872578 is about 198.9324619510.

The spelling of 7872578 in words is "seven million, eight hundred seventy-two thousand, five hundred seventy-eight".