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2742648220 = 2251310548647
BaseRepresentation
bin1010001101111001…
…0111110110011100
321002010202222001201
42203132113312130
521104104220340
61132052245244
7124652060644
oct24336276634
97063688051
102742648220
111188176224
12646610824
13349299790
141c0375524
15110bab79a
hexa3797d9c

2742648220 has 24 divisors (see below), whose sum is σ = 6202605024. Its totient is φ = 1012670016.

The previous prime is 2742648197. The next prime is 2742648221. The reversal of 2742648220 is 228462472.

It is a self number, because there is not a number n which added to its sum of digits gives 2742648220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742648221) by changing a digit.

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, 5274064 + ... + 5274583.

It is an arithmetic number, because the mean of its divisors is an integer number (258441876).

Almost surely, 22742648220 is an apocalyptic number.

2742648220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2742648220 is an abundant number, since it is smaller than the sum of its proper divisors (3459956804).

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

2742648220 is a wasteful number, since it uses less digits than its factorization.

2742648220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10548669 (or 10548667 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 37.

The square root of 2742648220 is about 52370.2990253063. The cubic root of 2742648220 is about 1399.7700676808.

The spelling of 2742648220 in words is "two billion, seven hundred forty-two million, six hundred forty-eight thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 10548647 21097294 42194588 52743235 105486470 137132411 210972940 274264822 548529644 685662055 1371324110 2742648220