1604488272 has 80 divisors (see below), whose sum is σ = 4208355648. Its totient is φ = 526689280.

The previous prime is 1604488261. The next prime is 1604488279. The reversal of 1604488272 is 2728844061.

It is a super-2 number, since 2×1604488272² = 5148765229971091968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604488279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2075278 + ... + 2076050.

Almost surely, 2^1604488272 is an apocalyptic number.

1604488272 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 1604488272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2104177824).

1604488272 is an abundant number, since it is smaller than the sum of its proper divisors (2603867376).

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

1604488272 is a wasteful number, since it uses less digits than its factorization.

1604488272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388 (or 1382 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 1604488272 is about 40056.0641101944. The cubic root of 1604488272 is about 1170.6997231640.

The spelling of 1604488272 in words is "one billion, six hundred four million, four hundred eighty-eight thousand, two hundred seventy-two".