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19838116 = 221721312
BaseRepresentation
bin100101110101…
…1010010100100
31101022212210001
41023223102210
520034304431
61545111044
7330423034
oct113532244
941285701
1019838116
111021a741
126788484
13415783c
1428c58c4
151b1ce61
hex12eb4a4

19838116 has 27 divisors (see below), whose sum is σ = 37162657. Its totient is φ = 9264320.

The previous prime is 19838113. The next prime is 19838123. The reversal of 19838116 is 61183891.

The square root of 19838116 is 4454.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15444900 + 4393216 = 3930^2 + 2096^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19838113) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 151371 + ... + 151501.

Almost surely, 219838116 is an apocalyptic number.

19838116 is the 4454-th square number.

It is an amenable number.

19838116 is a deficient number, since it is larger than the sum of its proper divisors (17324541).

19838116 is a wasteful number, since it uses less digits than its factorization.

19838116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 150 counting only the distinct ones).

The product of its digits is 10368, while the sum is 37.

The cubic root of 19838116 is about 270.7074087790.

The spelling of 19838116 in words is "nineteen million, eight hundred thirty-eight thousand, one hundred sixteen".