1628622036 has 72 divisors (see below), whose sum is σ = 4174770600. Its totient is φ = 535265280.

The previous prime is 1628622029. The next prime is 1628622059. The reversal of 1628622036 is 6302268261.

1628622036 is a `hidden beast` number, since 1 + 6 + 28 + 622 + 0 + 3 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 170145936 + 1458476100 = 13044^2 + 38190^2 .

It is a super-2 number, since 2×1628622036² = 5304819472289570592, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2117460 + ... + 2118228.

It is an arithmetic number, because the mean of its divisors is an integer number (57982925).

Almost surely, 2^1628622036 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 1628622036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2087385300).

1628622036 is an abundant number, since it is smaller than the sum of its proper divisors (2546148564).

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

1628622036 is a wasteful number, since it uses less digits than its factorization.

1628622036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529 (or 1524 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1628622036 is about 40356.1895624451. The cubic root of 1628622036 is about 1176.5401950418.

The spelling of 1628622036 in words is "one billion, six hundred twenty-eight million, six hundred twenty-two thousand, thirty-six".