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7240001941 = 22931615729
BaseRepresentation
bin1101011111000100…
…11010100110010101
3200200120100012120001
412233202122212111
5104311420030231
63154230211301
7344262000244
oct65742324625
920616305501
107240001941
113085879687
1214a07b3b31
138b4c57923
144c979295b
152c5925b61
hex1af89a995

7240001941 has 4 divisors (see below), whose sum is σ = 7271617900. Its totient is φ = 7208385984.

The previous prime is 7240001921. The next prime is 7240001953. The reversal of 7240001941 is 1491000427.

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 7046930916 + 193071025 = 83946^2 + 13895^2 .

It is a cyclic number.

It is not a de Polignac number, because 7240001941 - 215 = 7239969173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7240001911) 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, 15807636 + ... + 15808093.

It is an arithmetic number, because the mean of its divisors is an integer number (1817904475).

Almost surely, 27240001941 is an apocalyptic number.

It is an amenable number.

7240001941 is a deficient number, since it is larger than the sum of its proper divisors (31615959).

7240001941 is a wasteful number, since it uses less digits than its factorization.

7240001941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31615958.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 7240001941 is about 85088.2009505431. The cubic root of 7240001941 is about 1934.5482270518.

The spelling of 7240001941 in words is "seven billion, two hundred forty million, one thousand, nine hundred forty-one".

Divisors: 1 229 31615729 7240001941