1600406004 has 48 divisors (see below), whose sum is σ = 3833254656. Its totient is φ = 519504000.

The previous prime is 1600405991. The next prime is 1600406021. The reversal of 1600406004 is 4006040061.

It is a super-2 number, since 2×1600406004² = 5122598755278496032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63109 + ... + 84755.

It is an arithmetic number, because the mean of its divisors is an integer number (79859472).

Almost surely, 2^1600406004 is an apocalyptic number.

It is an amenable number.

1600406004 is an abundant number, since it is smaller than the sum of its proper divisors (2232848652).

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

1600406004 is a wasteful number, since it uses less digits than its factorization.

1600406004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21816 (or 21814 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1600406004 is about 40005.0747280892. The cubic root of 1600406004 is about 1169.7060171599.

Adding to 1600406004 its reverse (4006040061), we get a palindrome (5606446065).

The spelling of 1600406004 in words is "one billion, six hundred million, four hundred six thousand, four".