10515420 has 60 divisors (see below), whose sum is σ = 32992344. Its totient is φ = 2803680.

The previous prime is 10515419. The next prime is 10515443. The reversal of 10515420 is 2451501.

10515420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×10515420² = 221148115552800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 10515393 and 10515402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1626 + ... + 4865.

Almost surely, 2^10515420 is an apocalyptic number.

10515420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10515420 is an abundant number, since it is smaller than the sum of its proper divisors (22476924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10515420 is a wasteful number, since it uses less digits than its factorization.

10515420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6512 (or 6501 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 10515420 is about 3242.7488339370. The cubic root of 10515420 is about 219.0830985078.

Adding to 10515420 its reverse (2451501), we get a palindrome (12966921).

It can be divided in two parts, 105 and 15420, that multiplied together give a triangular number (1619100 = T₁₇₉₉).

The spelling of 10515420 in words is "ten million, five hundred fifteen thousand, four hundred twenty".