Search a number
-
+
2990562987 = 3315732
BaseRepresentation
bin1011001001000000…
…0101111010101011
321201102021100012010
42302100011322223
522111041003422
61212430051003
7134052236346
oct26220057253
97642240163
102990562987
1112a5105265
126b5649a63
1338875bcc9
1420526b45d
1512782cb0c
hexb2405eab

2990562987 has 6 divisors (see below), whose sum is σ = 3987543612. Its totient is φ = 1993645512.

The previous prime is 2990562977. The next prime is 2990562989. The reversal of 2990562987 is 7892650992.

It is not a de Polignac number, because 2990562987 - 216 = 2990497451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2990562989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78933 + ... + 110505.

It is an arithmetic number, because the mean of its divisors is an integer number (664590602).

Almost surely, 22990562987 is an apocalyptic number.

2990562987 is a deficient number, since it is larger than the sum of its proper divisors (996980625).

2990562987 is an frugal number, since it uses more digits than its factorization.

2990562987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63149 (or 31576 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 57.

The square root of 2990562987 is about 54686.0401473722. The cubic root of 2990562987 is about 1440.7357009350.

The spelling of 2990562987 in words is "two billion, nine hundred ninety million, five hundred sixty-two thousand, nine hundred eighty-seven".

Divisors: 1 3 31573 94719 996854329 2990562987