1005621852 has 24 divisors (see below), whose sum is σ = 2369686032. Its totient is φ = 331888000.

The previous prime is 1005621833. The next prime is 1005621863. The reversal of 1005621852 is 2581265001.

It is a super-2 number, since 2×1005621852² = 2022550618439819808, which contains 22 as substring.

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, 413649 + ... + 416072.

It is an arithmetic number, because the mean of its divisors is an integer number (98736918).

Almost surely, 2^1005621852 is an apocalyptic number.

1005621852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1005621852 is an abundant number, since it is smaller than the sum of its proper divisors (1364064180).

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

1005621852 is a wasteful number, since it uses less digits than its factorization.

1005621852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829829 (or 829827 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1005621852 is about 31711.5413059662. The cubic root of 1005621852 is about 1001.8704499025.

Adding to 1005621852 its reverse (2581265001), we get a palindrome (3586886853).

The spelling of 1005621852 in words is "one billion, five million, six hundred twenty-one thousand, eight hundred fifty-two".