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442511949 = 311313071409
BaseRepresentation
bin11010011000000…
…011001001001101
31010211122221021110
4122120003021031
51401240340244
6111524322233
713652201205
oct3230031115
91124587243
10442511949
11207871860
12104243379
13708a75b9
1442aad405
1528cae9b9
hex1a60324d

442511949 has 32 divisors (see below), whose sum is σ = 667054080. Its totient is φ = 258508800.

The previous prime is 442511947. The next prime is 442511981. The reversal of 442511949 is 949115244.

It is not a de Polignac number, because 442511949 - 21 = 442511947 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442511941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313357 + ... + 314765.

It is an arithmetic number, because the mean of its divisors is an integer number (20845440).

Almost surely, 2442511949 is an apocalyptic number.

It is an amenable number.

442511949 is a deficient number, since it is larger than the sum of its proper divisors (224542131).

442511949 is a wasteful number, since it uses less digits than its factorization.

442511949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761.

The product of its digits is 51840, while the sum is 39.

The square root of 442511949 is about 21035.9679834326. The cubic root of 442511949 is about 762.0351438383.

The spelling of 442511949 in words is "four hundred forty-two million, five hundred eleven thousand, nine hundred forty-nine".

Divisors: 1 3 11 31 33 93 307 341 921 1023 1409 3377 4227 9517 10131 15499 28551 43679 46497 104687 131037 314061 432563 480469 1297689 1441407 4758193 13409453 14274579 40228359 147503983 442511949