Search a number
-
+
19914748 = 2274671523
BaseRepresentation
bin100101111110…
…1111111111100
31101110202220021
41023331333330
520044232443
61550501524
7331162330
oct113757774
941422807
1019914748
1110272277
1268048a4
134183699
1429057c0
151b359ed
hex12fdffc

19914748 has 24 divisors (see below), whose sum is σ = 39940992. Its totient is φ = 8511024.

The previous prime is 19914737. The next prime is 19914761. The reversal of 19914748 is 84741991.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12315 + ... + 13837.

It is an arithmetic number, because the mean of its divisors is an integer number (1664208).

Almost surely, 219914748 is an apocalyptic number.

It is an amenable number.

19914748 is an abundant number, since it is smaller than the sum of its proper divisors (20026244).

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

19914748 is a wasteful number, since it uses less digits than its factorization.

19914748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001 (or 1999 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 19914748 is about 4462.5943127289. The cubic root of 19914748 is about 271.0555298035.

The spelling of 19914748 in words is "nineteen million, nine hundred fourteen thousand, seven hundred forty-eight".

Divisors: 1 2 4 7 14 28 467 934 1523 1868 3046 3269 6092 6538 10661 13076 21322 42644 711241 1422482 2844964 4978687 9957374 19914748