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88192993 = 727922783
BaseRepresentation
bin1010100000110…
…11011111100001
320010221200001011
411100123133201
5140034133433
612430140521
72120425300
oct520333741
9203850034
1088192993
1145867779
1225651741
131536b605
14b9da437
157b213cd
hex541b7e1

88192993 has 12 divisors (see below), whose sum is σ = 103895040. Its totient is φ = 74633832.

The previous prime is 88192981. The next prime is 88193011. The reversal of 88192993 is 39929188.

It is not a de Polignac number, because 88192993 - 25 = 88192961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88192933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7521 + ... + 15262.

It is an arithmetic number, because the mean of its divisors is an integer number (8657920).

Almost surely, 288192993 is an apocalyptic number.

It is an amenable number.

88192993 is a deficient number, since it is larger than the sum of its proper divisors (15702047).

88192993 is a wasteful number, since it uses less digits than its factorization.

88192993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22876 (or 22869 counting only the distinct ones).

The product of its digits is 279936, while the sum is 49.

The square root of 88192993 is about 9391.1124474154. The cubic root of 88192993 is about 445.1209417520.

The spelling of 88192993 in words is "eighty-eight million, one hundred ninety-two thousand, nine hundred ninety-three".

Divisors: 1 7 49 79 553 3871 22783 159481 1116367 1799857 12598999 88192993