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90248697 = 32711211839
BaseRepresentation
bin1010110000100…
…01010111111001
320021211002221100
411120101113321
5141100424242
612542202013
72144046510
oct530212771
9207732840
1090248697
1146a41200
1226283309
131590b1c6
14bdb3677
157dca54c
hex56115f9

90248697 has 36 divisors (see below), whose sum is σ = 163770880. Its totient is φ = 46878480.

The previous prime is 90248687. The next prime is 90248723. The reversal of 90248697 is 79684209.

It is a happy number.

It is not a de Polignac number, because 90248697 - 24 = 90248681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90248647) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1704 + ... + 13542.

Almost surely, 290248697 is an apocalyptic number.

It is an amenable number.

90248697 is a deficient number, since it is larger than the sum of its proper divisors (73522183).

90248697 is a wasteful number, since it uses less digits than its factorization.

90248697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11874 (or 11860 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 90248697 is about 9499.9314208051. The cubic root of 90248697 is about 448.5528772159.

It can be divided in two parts, 9024869 and 7, that added together give a triangular number (9024876 = T4248).

The spelling of 90248697 in words is "ninety million, two hundred forty-eight thousand, six hundred ninety-seven".

Divisors: 1 3 7 9 11 21 33 63 77 99 121 231 363 693 847 1089 2541 7623 11839 35517 82873 106551 130229 248619 390687 745857 911603 1172061 1432519 2734809 4297557 8204427 10027633 12892671 30082899 90248697