1021904832 has 224 divisors, whose sum is σ = 3080577024. Its totient is φ = 296755200.

The previous prime is 1021904809. The next prime is 1021904893. The reversal of 1021904832 is 2384091201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021904832.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3636532 + ... + 3636812.

It is an arithmetic number, because the mean of its divisors is an integer number (13752576).

Almost surely, 2^1021904832 is an apocalyptic number.

1021904832 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 1021904832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1540288512).

1021904832 is an abundant number, since it is smaller than the sum of its proper divisors (2058672192).

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

1021904832 is a wasteful number, since it uses less digits than its factorization.

1021904832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1021904832 is about 31967.2462373599. The cubic root of 1021904832 is about 1007.2489366145.

The spelling of 1021904832 in words is "one billion, twenty-one million, nine hundred four thousand, eight hundred thirty-two".