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2990 = 251323
BaseRepresentation
bin101110101110
311002202
4232232
543430
621502
711501
oct5656
94082
102990
112279
121892
131490
141138
15d45
hexbae

2990 has 16 divisors (see below), whose sum is σ = 6048. Its totient is φ = 1056.

The previous prime is 2971. The next prime is 2999. The reversal of 2990 is 992.

2990 = T12 + T13 + ... + T26.

2990 is nontrivially palindromic in base 4.

2990 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

2990 is an undulating number in base 8.

It is a Curzon number.

It is a plaindrome in base 11 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2999) 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, 119 + ... + 141.

It is an arithmetic number, because the mean of its divisors is an integer number (378).

2990 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3024).

2990 is a wasteful number, since it uses less digits than its factorization.

2990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 2990 is about 54.6808924580. The cubic root of 2990 is about 14.4064528693.

The spelling of 2990 in words is "two thousand, nine hundred ninety".

Divisors: 1 2 5 10 13 23 26 46 65 115 130 230 299 598 1495 2990