1616822928 has 120 divisors (see below), whose sum is σ = 5179626816. Its totient is φ = 461203200.

The previous prime is 1616822923. The next prime is 1616822939. The reversal of 1616822928 is 8292286161.

1616822928 is a `hidden beast` number, since 1 + 616 + 8 + 2 + 2 + 9 + 28 = 666.

It is a super-2 number, since 2×1616822928² = 5228232761012986368, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1616822923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1028383 + ... + 1029953.

Almost surely, 2^1616822928 is an apocalyptic number.

1616822928 is a gapful number since it is divisible by the number (18) 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 1616822928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2589813408).

1616822928 is an abundant number, since it is smaller than the sum of its proper divisors (3562803888).

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

1616822928 is a wasteful number, since it uses less digits than its factorization.

1616822928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613 (or 2604 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 1616822928 is about 40209.7367312943. The cubic root of 1616822928 is about 1173.6920234576.

The spelling of 1616822928 in words is "one billion, six hundred sixteen million, eight hundred twenty-two thousand, nine hundred twenty-eight".