Search a number
-
+
47748908920 = 23510311589541
BaseRepresentation
bin101100011110000011…
…101000011101111000
311120020200222220012011
4230132003220131320
51240242210041140
633534024455304
73310156012666
oct543603503570
9146220886164
1047748908920
1119283017aa9
12930701a534
13466c59047b
14244d793c36
151396e34cea
hexb1e0e8778

47748908920 has 32 divisors (see below), whose sum is σ = 108478113120. Its totient is φ = 18914129280.

The previous prime is 47748908869. The next prime is 47748908953. The reversal of 47748908920 is 2980984774.

47748908920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5790651 + ... + 5798890.

It is an arithmetic number, because the mean of its divisors is an integer number (3389941035).

Almost surely, 247748908920 is an apocalyptic number.

47748908920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47748908920 is an abundant number, since it is smaller than the sum of its proper divisors (60729204200).

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

47748908920 is a wasteful number, since it uses less digits than its factorization.

47748908920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11589655 (or 11589651 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 58.

The spelling of 47748908920 in words is "forty-seven billion, seven hundred forty-eight million, nine hundred eight thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 103 206 412 515 824 1030 2060 4120 11589541 23179082 46358164 57947705 92716328 115895410 231790820 463581640 1193722723 2387445446 4774890892 5968613615 9549781784 11937227230 23874454460 47748908920