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28774632601 = 11213372831747
BaseRepresentation
bin11010110011000110…
…100000110010011001
32202021100112210022101
4122303012200302121
5432412301220401
621115140123401
72036030225101
oct326306406231
982240483271
1028774632601
1111226591400
1256b0696561
13293755b430
14156d7d4201
15b3627c101
hex6b31a0c99

28774632601 has 48 divisors (see below), whose sum is σ = 35125542592. Its totient is φ = 23397517440.

The previous prime is 28774632581. The next prime is 28774632617. The reversal of 28774632601 is 10623647782.

It is not a de Polignac number, because 28774632601 - 213 = 28774624409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28774635601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16470010 + ... + 16471756.

Almost surely, 228774632601 is an apocalyptic number.

It is an amenable number.

28774632601 is a deficient number, since it is larger than the sum of its proper divisors (6350909991).

28774632601 is a wasteful number, since it uses less digits than its factorization.

28774632601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 28774632601 in words is "twenty-eight billion, seven hundred seventy-four million, six hundred thirty-two thousand, six hundred one".

Divisors: 1 11 13 37 121 143 283 407 481 1573 1747 3113 3679 4477 5291 10471 19217 22711 34243 40469 58201 64639 115181 136123 211387 249821 445159 494401 711029 840307 1266991 1497353 2748031 5438411 6427213 7821319 9243377 16470883 18292837 59822521 70699343 101677147 201221207 237806881 777692773 2213433277 2615875691 28774632601