1020340432 has 80 divisors (see below), whose sum is σ = 2163611520. Its totient is φ = 464486400.

The previous prime is 1020340397. The next prime is 1020340469. The reversal of 1020340432 is 2340430201.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884368 + ... + 885520.

It is an arithmetic number, because the mean of its divisors is an integer number (27045144).

Almost surely, 2^1020340432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020340432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1081805760).

1020340432 is an abundant number, since it is smaller than the sum of its proper divisors (1143271088).

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

1020340432 is a wasteful number, since it uses less digits than its factorization.

1020340432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292 (or 1286 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1020340432 is about 31942.7680704099. The cubic root of 1020340432 is about 1006.7346861826.

Adding to 1020340432 its reverse (2340430201), we get a palindrome (3360770633).

The spelling of 1020340432 in words is "one billion, twenty million, three hundred forty thousand, four hundred thirty-two".