1628073216 has 864 divisors, whose sum is σ = 6710860800. Its totient is φ = 383201280.

The previous prime is 1628073211. The next prime is 1628073217. The reversal of 1628073216 is 6123708261.

1628073216 is a `hidden beast` number, since 1 + 628 + 0 + 7 + 3 + 21 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628073211) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 70785781 + ... + 70785803.

It is an arithmetic number, because the mean of its divisors is an integer number (7767200).

Almost surely, 2^1628073216 is an apocalyptic number.

1628073216 is a gapful number since it is divisible by the number (16) 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 1628073216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3355430400).

1628073216 is an abundant number, since it is smaller than the sum of its proper divisors (5082787584).

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

1628073216 is a wasteful number, since it uses less digits than its factorization.

1628073216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1628073216 is about 40349.3892890586. The cubic root of 1628073216 is about 1176.4080216829.

The spelling of 1628073216 in words is "one billion, six hundred twenty-eight million, seventy-three thousand, two hundred sixteen".