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1002444442 = 210938911821
BaseRepresentation
bin111011110000000…
…001011010011010
32120212021110020221
4323300001122122
54023111210232
6243245510254
733561431356
oct7360013232
92525243227
101002444442
1147494338a
1223b87238a
1312c8b49bc
14971c6466
155d015897
hex3bc0169a

1002444442 has 16 divisors (see below), whose sum is σ = 1521491400. Its totient is φ = 495305280.

The previous prime is 1002444439. The next prime is 1002444449. The reversal of 1002444442 is 2444442001.

It can be written as a sum of positive squares in 4 ways, for example, as 651219361 + 351225081 = 25519^2 + 18741^2 .

It is not an unprimeable number, because it can be changed into a prime (1002444449) 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, 78892 + ... + 90712.

Almost surely, 21002444442 is an apocalyptic number.

1002444442 is a deficient number, since it is larger than the sum of its proper divisors (519046958).

1002444442 is a wasteful number, since it uses less digits than its factorization.

1002444442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12321.

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 1002444442 is about 31661.4030327148. The cubic root of 1002444442 is about 1000.8141509783.

Adding to 1002444442 its reverse (2444442001), we get a palindrome (3446886443).

The spelling of 1002444442 in words is "one billion, two million, four hundred forty-four thousand, four hundred forty-two".

Divisors: 1 2 109 218 389 778 11821 23642 42401 84802 1288489 2576978 4598369 9196738 501222221 1002444442