1020344004 has 72 divisors (see below), whose sum is σ = 2808624000. Its totient is φ = 311097024.

The previous prime is 1020343981. The next prime is 1020344021. The reversal of 1020344004 is 4004430201.

1020344004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1020344004² = 2082203772997504032, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5884 + ... + 45555.

Almost surely, 2^1020344004 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 1020344004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1404312000).

1020344004 is an abundant number, since it is smaller than the sum of its proper divisors (1788279996).

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

1020344004 is a wasteful number, since it uses less digits than its factorization.

1020344004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51497 (or 51492 counting only the distinct ones).

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

The square root of 1020344004 is about 31942.8239828604. The cubic root of 1020344004 is about 1006.7358609709.

Adding to 1020344004 its reverse (4004430201), we get a palindrome (5024774205).

The spelling of 1020344004 in words is "one billion, twenty million, three hundred forty-four thousand, four".