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6240981 = 323151599
BaseRepresentation
bin10111110011101011010101
3102202002000110
4113303223111
53044202411
6341433233
7104022165
oct27635325
912662013
106240981
113582a3a
12210b819
1313a68b6
14b865a5
158342a6
hex5f3ad5

6240981 has 16 divisors (see below), whose sum is σ = 8755200. Its totient is φ = 3946800.

The previous prime is 6240973. The next prime is 6240991. The reversal of 6240981 is 1890426.

It is not a de Polignac number, because 6240981 - 23 = 6240973 is a prime.

It is a super-2 number, since 2×62409812 = 77899687684722, which contains 22 as substring.

6240981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6240991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10120 + ... + 10718.

It is an arithmetic number, because the mean of its divisors is an integer number (547200).

Almost surely, 26240981 is an apocalyptic number.

It is an amenable number.

6240981 is a deficient number, since it is larger than the sum of its proper divisors (2514219).

6240981 is a wasteful number, since it uses less digits than its factorization.

6240981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 6240981 is about 2498.1955487912. The cubic root of 6240981 is about 184.1129288648.

The spelling of 6240981 in words is "six million, two hundred forty thousand, nine hundred eighty-one".

Divisors: 1 3 23 69 151 453 599 1797 3473 10419 13777 41331 90449 271347 2080327 6240981