Search a number
-
+
20897012498 = 210448506249
BaseRepresentation
bin10011011101100011…
…110001101100010010
31222221100102020001212
4103131203301230102
5320244113344443
613333331300122
71336563450455
oct233543615422
958840366055
1020897012498
11895390086a
12407244a642
131c8049656b
1410234a549c
158248a7618
hex4dd8f1b12

20897012498 has 4 divisors (see below), whose sum is σ = 31345518750. Its totient is φ = 10448506248.

The previous prime is 20897012491. The next prime is 20897012501. The reversal of 20897012498 is 89421079802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14722667569 + 6174344929 = 121337^2 + 78577^2 .

It is not an unprimeable number, because it can be changed into a prime (20897012491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5224253123 + ... + 5224253126.

Almost surely, 220897012498 is an apocalyptic number.

20897012498 is a deficient number, since it is larger than the sum of its proper divisors (10448506252).

20897012498 is a wasteful number, since it uses less digits than its factorization.

20897012498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10448506251.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 20897012498 in words is "twenty billion, eight hundred ninety-seven million, twelve thousand, four hundred ninety-eight".

Divisors: 1 2 10448506249 20897012498