10420815 has 8 divisors (see below), whose sum is σ = 16673328. Its totient is φ = 5557760.

The previous prime is 10420801. The next prime is 10420829. The reversal of 10420815 is 51802401.

10420815 is digitally balanced in base 2, 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 (10420801) and next prime (10420829).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10420815 - 2⁴ = 10420799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10420791 and 10420800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347346 + ... + 347375.

It is an arithmetic number, because the mean of its divisors is an integer number (2084166).

Almost surely, 2^10420815 is an apocalyptic number.

10420815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10420815 is a deficient number, since it is larger than the sum of its proper divisors (6252513).

10420815 is an equidigital number, since it uses as much as digits as its factorization.

10420815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694729.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 10420815 is about 3228.1287149059. The cubic root of 10420815 is about 218.4241035601.

The spelling of 10420815 in words is "ten million, four hundred twenty thousand, eight hundred fifteen".