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11415137428 = 229373045661
BaseRepresentation
bin10101010000110010…
…10010110010010100
31002110112121001201201
422220121102302110
5141334233344203
65124414002244
7552610032022
oct125031226224
932415531651
1011415137428
114928602782
122266aa6384
1310cbc38cb6
147a4095712
1546c242e1d
hex2a8652c94

11415137428 has 12 divisors (see below), whose sum is σ = 19997816692. Its totient is φ = 5701475520.

The previous prime is 11415137401. The next prime is 11415137443. The reversal of 11415137428 is 82473151411.

It can be written as a sum of positive squares in 2 ways, for example, as 3688375824 + 7726761604 = 60732^2 + 87902^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519083 + ... + 1526578.

Almost surely, 211415137428 is an apocalyptic number.

It is an amenable number.

11415137428 is a deficient number, since it is larger than the sum of its proper divisors (8582679264).

11415137428 is a wasteful number, since it uses less digits than its factorization.

11415137428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046602 (or 3046600 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

Adding to 11415137428 its reverse (82473151411), we get a palindrome (93888288839).

The spelling of 11415137428 in words is "eleven billion, four hundred fifteen million, one hundred thirty-seven thousand, four hundred twenty-eight".

Divisors: 1 2 4 937 1874 3748 3045661 6091322 12182644 2853784357 5707568714 11415137428