1021632 has 56 divisors (see below), whose sum is σ = 2871216. Its totient is φ = 319488.

The previous prime is 1021627. The next prime is 1021651. The reversal of 1021632 is 2361201.

1021632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 3108 + ... + 3420.

2^1021632 is an apocalyptic number.

1021632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1435608).

1021632 is an abundant number, since it is smaller than the sum of its proper divisors (1849584).

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

1021632 is a wasteful number, since it uses less digits than its factorization.

1021632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1021632 is about 1010.7581313054. The cubic root of 1021632 is about 100.7159288931.

Adding to 1021632 its reverse (2361201), we get a palindrome (3382833).

It can be divided in two parts, 1021 and 632, that added together give a triangular number (1653 = T₅₇).

The spelling of 1021632 in words is "one million, twenty-one thousand, six hundred thirty-two".