10820547 has 14 divisors (see below), whose sum is σ = 16224492. Its totient is φ = 7213212.

The previous prime is 10820543. The next prime is 10820561. The reversal of 10820547 is 74502801.

10820547 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10820547 - 2² = 10820543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 10820547.

It is not an unprimeable number, because it can be changed into a prime (10820543) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 6693 + ... + 8150.

Almost surely, 2^10820547 is an apocalyptic number.

10820547 is a deficient number, since it is larger than the sum of its proper divisors (5403945).

10820547 is an frugal number, since it uses more digits than its factorization.

10820547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14861 (or 14846 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 10820547 is about 3289.4599860767. The cubic root of 10820547 is about 221.1819785150.

The spelling of 10820547 in words is "ten million, eight hundred twenty thousand, five hundred forty-seven".