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1002444404 = 221337521021
BaseRepresentation
bin111011110000000…
…001011001110100
32120212021110012112
4323300001121310
54023111210104
6243245510152
733561431303
oct7360013164
92525243175
101002444404
11474943355
1223b872358
1312c8b4990
14971c643a
155d01586e
hex3bc01674

1002444404 has 24 divisors (see below), whose sum is σ = 1940285928. Its totient is φ = 450161280.

The previous prime is 1002444353. The next prime is 1002444407. The reversal of 1002444404 is 4044442001.

It can be written as a sum of positive squares in 4 ways, for example, as 155052304 + 847392100 = 12452^2 + 29110^2 .

It is a super-2 number, since 2×10024444042 = 2009789566221830432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1002444404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002444407) 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, 258587 + ... + 262434.

It is an arithmetic number, because the mean of its divisors is an integer number (80845247).

Almost surely, 21002444404 is an apocalyptic number.

It is an amenable number.

1002444404 is a deficient number, since it is larger than the sum of its proper divisors (937841524).

1002444404 is a wasteful number, since it uses less digits than its factorization.

1002444404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521075 (or 521073 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 1002444404 is about 31661.4024326150. The cubic root of 1002444404 is about 1000.8141383322.

Adding to 1002444404 its reverse (4044442001), we get a palindrome (5046886405).

The spelling of 1002444404 in words is "one billion, two million, four hundred forty-four thousand, four hundred four".

Divisors: 1 2 4 13 26 37 52 74 148 481 962 1924 521021 1042042 2084084 6773273 13546546 19277777 27093092 38555554 77111108 250611101 501222202 1002444404