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90247245 = 35112192617
BaseRepresentation
bin1010110000100…
…01000001001101
320021211000221120
411120101001031
5141100402440
612542151153
72144042334
oct530210115
9207730846
1090247245
1146a40100
12262824b9
131590a64a
14bdb2d1b
157dc9dd0
hex561104d

90247245 has 48 divisors (see below), whose sum is σ = 167133120. Its totient is φ = 41437440.

The previous prime is 90247229. The next prime is 90247247. The reversal of 90247245 is 54274209.

It is not a de Polignac number, because 90247245 - 24 = 90247229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90247247) 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, 33177 + ... + 35793.

It is an arithmetic number, because the mean of its divisors is an integer number (3481940).

Almost surely, 290247245 is an apocalyptic number.

90247245 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90247245 is a deficient number, since it is larger than the sum of its proper divisors (76885875).

90247245 is a wasteful number, since it uses less digits than its factorization.

90247245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666 (or 2655 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 90247245 is about 9499.8549988934. The cubic root of 90247245 is about 448.5504716326.

The spelling of 90247245 in words is "ninety million, two hundred forty-seven thousand, two hundred forty-five".

Divisors: 1 3 5 11 15 19 33 55 57 95 121 165 209 285 363 605 627 1045 1815 2299 2617 3135 6897 7851 11495 13085 28787 34485 39255 49723 86361 143935 149169 248615 316657 431805 546953 745845 949971 1583285 1640859 2734765 4749855 6016483 8204295 18049449 30082415 90247245