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2990637 = 321325561
BaseRepresentation
bin1011011010001000101101
312121221101100
423122020231
51231200022
6144033313
734264026
oct13321055
95557340
102990637
111762a01
121002839
13809310
1457bc4d
153e11ac
hex2da22d

2990637 has 12 divisors (see below), whose sum is σ = 4652284. Its totient is φ = 1840320.

The previous prime is 2990629. The next prime is 2990639. The reversal of 2990637 is 7360992.

2990637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1425636 + 1565001 = 1194^2 + 1251^2 .

It is not a de Polignac number, because 2990637 - 23 = 2990629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2990639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12664 + ... + 12897.

22990637 is an apocalyptic number.

It is an amenable number.

2990637 is a deficient number, since it is larger than the sum of its proper divisors (1661647).

2990637 is a wasteful number, since it uses less digits than its factorization.

2990637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25580 (or 25577 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 2990637 is about 1729.3458300756. The cubic root of 2990637 is about 144.0747586355.

The spelling of 2990637 in words is "two million, nine hundred ninety thousand, six hundred thirty-seven".

Divisors: 1 3 9 13 39 117 25561 76683 230049 332293 996879 2990637