2106523460 has 24 divisors (see below), whose sum is σ = 4576241880. Its totient is φ = 813553664.

The previous prime is 2106523457. The next prime is 2106523571. The reversal of 2106523460 is 643256012.

It can be written as a sum of positive squares in 4 ways, for example, as 98049604 + 2008473856 = 9902^2 + 44816^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 1815389 + ... + 1816548.

It is an arithmetic number, because the mean of its divisors is an integer number (190676745).

Almost surely, 2^2106523460 is an apocalyptic number.

2106523460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2106523460 is an abundant number, since it is smaller than the sum of its proper divisors (2469718420).

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

2106523460 is a wasteful number, since it uses less digits than its factorization.

2106523460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3631975 (or 3631973 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2106523460 is about 45896.8785430992. The cubic root of 2106523460 is about 1281.9037954227.

Adding to 2106523460 its reverse (643256012), we get a palindrome (2749779472).

The spelling of 2106523460 in words is "two billion, one hundred six million, five hundred twenty-three thousand, four hundred sixty".