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2987982 = 23355333
BaseRepresentation
bin1011011001011111001110
312121210202000
423121133032
51231103412
6144013130
734253214
oct13313716
95553660
102987982
111760a08
1210011a6
1380804a
1457acb4
153e04dc
hex2d97ce

2987982 has 16 divisors (see below), whose sum is σ = 6640080. Its totient is φ = 995976.

The previous prime is 2987969. The next prime is 2987983. The reversal of 2987982 is 2897892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2987983) 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, 27613 + ... + 27720.

It is an arithmetic number, because the mean of its divisors is an integer number (415005).

22987982 is an apocalyptic number.

2987982 is an abundant number, since it is smaller than the sum of its proper divisors (3652098).

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

2987982 is a wasteful number, since it uses less digits than its factorization.

2987982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55344 (or 55338 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 2987982 is about 1728.5780283227. The cubic root of 2987982 is about 144.0321108945.

It can be divided in two parts, 2987 and 982, that added together give a square (3969 = 632).

The spelling of 2987982 in words is "two million, nine hundred eighty-seven thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 9 18 27 54 55333 110666 165999 331998 497997 995994 1493991 2987982