Search a number
-
+
20754108472 = 2347480111497
BaseRepresentation
bin10011010101000010…
…101001000000111000
31222120101111221121011
4103111002221000320
5320001022432342
613311224323304
71333210003606
oct232502510070
958511457534
1020754108472
118890175969
124032613534
131c599b0476
14100c506876
1581707a717
hex4d50a9038

20754108472 has 32 divisors (see below), whose sum is σ = 39753645120. Its totient is φ = 10153267200.

The previous prime is 20754108469. The next prime is 20754108493. The reversal of 20754108472 is 27480145702.

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 7 ways as a sum of consecutive naturals, for example, 1799428 + ... + 1810924.

It is an arithmetic number, because the mean of its divisors is an integer number (1242301410).

Almost surely, 220754108472 is an apocalyptic number.

It is an amenable number.

20754108472 is a deficient number, since it is larger than the sum of its proper divisors (18999536648).

20754108472 is a wasteful number, since it uses less digits than its factorization.

20754108472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16351 (or 16347 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 40.

The spelling of 20754108472 in words is "twenty billion, seven hundred fifty-four million, one hundred eight thousand, four hundred seventy-two".

Divisors: 1 2 4 8 47 94 188 376 4801 9602 11497 19204 22994 38408 45988 91976 225647 451294 540359 902588 1080718 1805176 2161436 4322872 55197097 110394194 220788388 441576776 2594263559 5188527118 10377054236 20754108472