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1992670992 = 2432131815881
BaseRepresentation
bin111011011000101…
…1011111100010000
312010212120011201100
41312301123330100
513040110432432
6525421504400
7100244265264
oct16661337420
95125504640
101992670992
119328a1234
12477412100
13259aac480
1414c90c0a4
15b9e1607c
hex76c5bf10

1992670992 has 120 divisors (see below), whose sum is σ = 6039896408. Its totient is φ = 609638400.

The previous prime is 1992670973. The next prime is 1992671003. The reversal of 1992670992 is 2990762991.

It can be written as a sum of positive squares in 4 ways, for example, as 3154176 + 1989516816 = 1776^2 + 44604^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 335892 + ... + 341772.

Almost surely, 21992670992 is an apocalyptic number.

1992670992 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 1992670992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3019948204).

1992670992 is an abundant number, since it is smaller than the sum of its proper divisors (4047225416).

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

1992670992 is a wasteful number, since it uses less digits than its factorization.

1992670992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089 (or 6080 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 1992670992 is about 44639.3435435603. The cubic root of 1992670992 is about 1258.3801709313.

The spelling of 1992670992 in words is "one billion, nine hundred ninety-two million, six hundred seventy thousand, nine hundred ninety-two".