1630890272 has 90 divisors (see below), whose sum is σ = 3592751715. Its totient is φ = 728749120.

The previous prime is 1630890263. The next prime is 1630890281. The reversal of 1630890272 is 2720980361.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (1630890263) and next prime (1630890281).

It can be written as a sum of positive squares in only one way, i.e., 815445136 + 815445136 = 28556^2 + 28556^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=28556.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 27642179 + ... + 27642237.

Almost surely, 2^1630890272 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 1630890272

1630890272 is an abundant number, since it is smaller than the sum of its proper divisors (1961861443).

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

1630890272 is an frugal number, since it uses more digits than its factorization.

1630890272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1630890272 is about 40384.2824871261. The cubic root of 1630890272 is about 1177.0861438683.

The spelling of 1630890272 in words is "one billion, six hundred thirty million, eight hundred ninety thousand, two hundred seventy-two".