10621020 has 48 divisors (see below), whose sum is σ = 29907360. Its totient is φ = 2816256.

The previous prime is 10621007. The next prime is 10621027. The reversal of 10621020 is 2012601.

It is a super-2 number, since 2×10621020² = 225612131680800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10620987 and 10621005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10621027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13354 + ... + 14126.

It is an arithmetic number, because the mean of its divisors is an integer number (623070).

Almost surely, 2^10621020 is an apocalyptic number.

10621020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10621020 is an abundant number, since it is smaller than the sum of its proper divisors (19286340).

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

10621020 is a wasteful number, since it uses less digits than its factorization.

10621020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 10621020 is about 3258.9906412876. The cubic root of 10621020 is about 219.8140301686.

Adding to 10621020 its reverse (2012601), we get a palindrome (12633621).

The spelling of 10621020 in words is "ten million, six hundred twenty-one thousand, twenty".