2105621232 has 80 divisors (see below), whose sum is σ = 6390507648. Its totient is φ = 588983040.

The previous prime is 2105621171. The next prime is 2105621279. The reversal of 2105621232 is 2321265012.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146518 + ... + 160245.

Almost surely, 2^2105621232 is an apocalyptic number.

2105621232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2105621232 is an abundant number, since it is smaller than the sum of its proper divisors (4284886416).

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

2105621232 is a wasteful number, since it uses less digits than its factorization.

2105621232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306798 (or 306792 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2105621232 is about 45887.0486303053. The cubic root of 2105621232 is about 1281.7207553444.

Adding to 2105621232 its reverse (2321265012), we get a palindrome (4426886244).

The spelling of 2105621232 in words is "two billion, one hundred five million, six hundred twenty-one thousand, two hundred thirty-two".