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98012405 = 5181108301
BaseRepresentation
bin1011101011110…
…00110011110101
320211102112202002
411311320303311
5200042344110
613420425045
72300043311
oct565706365
9224375662
1098012405
1150364197
12289a8185
13173c8c0a
14d034b41
158910aa5
hex5d78cf5

98012405 has 8 divisors (see below), whose sum is σ = 118265784. Its totient is φ = 77976000.

The previous prime is 98012401. The next prime is 98012441. The reversal of 98012405 is 50421089.

It can be written as a sum of positive squares in 4 ways, for example, as 5410276 + 92602129 = 2326^2 + 9623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 98012405 - 22 = 98012401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98012401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53246 + ... + 55055.

It is an arithmetic number, because the mean of its divisors is an integer number (14783223).

Almost surely, 298012405 is an apocalyptic number.

It is an amenable number.

98012405 is a deficient number, since it is larger than the sum of its proper divisors (20253379).

98012405 is a wasteful number, since it uses less digits than its factorization.

98012405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108487.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 98012405 is about 9900.1214639013. The cubic root of 98012405 is about 461.0630816035.

The spelling of 98012405 in words is "ninety-eight million, twelve thousand, four hundred five".

Divisors: 1 5 181 905 108301 541505 19602481 98012405