10720515 has 24 divisors (see below), whose sum is σ = 18578160. Its totient is φ = 5276544.

The previous prime is 10720511. The next prime is 10720519. The reversal of 10720515 is 51502701.

10720515 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10720511) and next prime (10720519).

It is not a de Polignac number, because 10720515 - 2² = 10720511 is a prime.

It is a super-2 number, since 2×10720515² = 229858883730450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10720491 and 10720500.

It is not an unprimeable number, because it can be changed into a prime (10720511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 421 + ... + 4649.

It is an arithmetic number, because the mean of its divisors is an integer number (774090).

Almost surely, 2^10720515 is an apocalyptic number.

10720515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10720515 is a deficient number, since it is larger than the sum of its proper divisors (7857645).

10720515 is a wasteful number, since it uses less digits than its factorization.

10720515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263 (or 4250 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 10720515 is about 3274.2197543842. The cubic root of 10720515 is about 220.4982851662.

The spelling of 10720515 in words is "ten million, seven hundred twenty thousand, five hundred fifteen".