10815945 has 32 divisors (see below), whose sum is σ = 19906560. Its totient is φ = 4912320.

The previous prime is 10815941. The next prime is 10815953. The reversal of 10815945 is 54951801.

It is not a de Polignac number, because 10815945 - 2² = 10815941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10815941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24880 + ... + 25310.

It is an arithmetic number, because the mean of its divisors is an integer number (622080).

Almost surely, 2^10815945 is an apocalyptic number.

10815945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10815945 is a deficient number, since it is larger than the sum of its proper divisors (9090615).

10815945 is a wasteful number, since it uses less digits than its factorization.

10815945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 10815945 is about 3288.7604047726. The cubic root of 10815945 is about 221.1506176912.

The spelling of 10815945 in words is "ten million, eight hundred fifteen thousand, nine hundred forty-five".