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2978702245 = 51518739227
BaseRepresentation
bin1011000110001011…
…0110001110100101
321200120221202022101
42301202312032211
522100021432440
61211323532101
7133546360051
oct26142661645
97616852271
102978702245
1112994440a2
126b168a031
1338616850c
14203860c61
1512678869a
hexb18b63a5

2978702245 has 8 divisors (see below), whose sum is σ = 3574769184. Its totient is φ = 2382744144.

The previous prime is 2978702231. The next prime is 2978702249. The reversal of 2978702245 is 5422078792.

2978702245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2978702245 - 27 = 2978702117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2978702195 and 2978702204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978702249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56322 + ... + 95548.

It is an arithmetic number, because the mean of its divisors is an integer number (446846148).

Almost surely, 22978702245 is an apocalyptic number.

It is an amenable number.

2978702245 is a deficient number, since it is larger than the sum of its proper divisors (596066939).

2978702245 is a wasteful number, since it uses less digits than its factorization.

2978702245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54419.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 2978702245 is about 54577.4884453288. The cubic root of 2978702245 is about 1438.8284975827.

The spelling of 2978702245 in words is "two billion, nine hundred seventy-eight million, seven hundred two thousand, two hundred forty-five".

Divisors: 1 5 15187 39227 75935 196135 595740449 2978702245