1020004434 has 64 divisors (see below), whose sum is σ = 2325012480. Its totient is φ = 331315920.

The previous prime is 1020004423. The next prime is 1020004441. The reversal of 1020004434 is 4344000201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon 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, 687057 + ... + 688539.

It is an arithmetic number, because the mean of its divisors is an integer number (36328320).

Almost surely, 2^1020004434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020004434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1162506240).

1020004434 is an abundant number, since it is smaller than the sum of its proper divisors (1305008046).

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

1020004434 is a wasteful number, since it uses less digits than its factorization.

1020004434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812 (or 1806 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1020004434 is about 31937.5082622299. The cubic root of 1020004434 is about 1006.6241681740.

Adding to 1020004434 its reverse (4344000201), we get a palindrome (5364004635).

The spelling of 1020004434 in words is "one billion, twenty million, four thousand, four hundred thirty-four".