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29264981 = 137213613
BaseRepresentation
bin110111110100…
…0110001010101
32001001211000012
41233220301111
524442434411
62523130005
7503514434
oct157506125
961054005
1029264981
1115579239
129973905
1360a8575
143c5b11b
15288118b
hex1be8c55

29264981 has 4 divisors (see below), whose sum is σ = 29478732. Its totient is φ = 29051232.

The previous prime is 29264971. The next prime is 29264987. The reversal of 29264981 is 18946292.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25300900 + 3964081 = 5030^2 + 1991^2 .

It is a cyclic number.

It is not a de Polignac number, because 29264981 - 218 = 29002837 is a prime.

It is a super-2 number, since 2×292649812 = 1712878225860722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29264987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106670 + ... + 106943.

It is an arithmetic number, because the mean of its divisors is an integer number (7369683).

Almost surely, 229264981 is an apocalyptic number.

It is an amenable number.

29264981 is a deficient number, since it is larger than the sum of its proper divisors (213751).

29264981 is a wasteful number, since it uses less digits than its factorization.

29264981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213750.

The product of its digits is 62208, while the sum is 41.

The square root of 29264981 is about 5409.7117298429. The cubic root of 29264981 is about 308.1646004151.

The spelling of 29264981 in words is "twenty-nine million, two hundred sixty-four thousand, nine hundred eighty-one".

Divisors: 1 137 213613 29264981