10520878 has 4 divisors (see below), whose sum is σ = 15781320. Its totient is φ = 5260438.

The previous prime is 10520857. The next prime is 10520879. The reversal of 10520878 is 87802501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87802501 = 17 ⋅5164853.

It is a super-2 number, since 2×10520878² = 221377747781768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10520879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2630218 + ... + 2630221.

It is an arithmetic number, because the mean of its divisors is an integer number (3945330).

Almost surely, 2^10520878 is an apocalyptic number.

10520878 is a deficient number, since it is larger than the sum of its proper divisors (5260442).

10520878 is an equidigital number, since it uses as much as digits as its factorization.

10520878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260441.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 10520878 is about 3243.5902947197. The cubic root of 10520878 is about 219.1209967794.

The spelling of 10520878 in words is "ten million, five hundred twenty thousand, eight hundred seventy-eight".