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122860493 = 7211322189
BaseRepresentation
bin1110101001010…
…11001111001101
322120011221220122
413110223033031
5222423013433
620105154325
73021203600
oct724531715
9276157818
10122860493
11633959a8
123518b9a5
131c5b8c22
1412462337
15abbd198
hex752b3cd

122860493 has 12 divisors (see below), whose sum is σ = 144190620. Its totient is φ = 104372352.

The previous prime is 122860489. The next prime is 122860499. The reversal of 122860493 is 394068221.

It can be written as a sum of positive squares in 2 ways, for example, as 33028009 + 89832484 = 5747^2 + 9478^2 .

It is not a de Polignac number, because 122860493 - 22 = 122860489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122860499) 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, 5558 + ... + 16631.

It is an arithmetic number, because the mean of its divisors is an integer number (12015885).

Almost surely, 2122860493 is an apocalyptic number.

It is an amenable number.

122860493 is a deficient number, since it is larger than the sum of its proper divisors (21330127).

122860493 is a wasteful number, since it uses less digits than its factorization.

122860493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22316 (or 22309 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 122860493 is about 11084.2452607293. The cubic root of 122860493 is about 497.1308919282.

The spelling of 122860493 in words is "one hundred twenty-two million, eight hundred sixty thousand, four hundred ninety-three".

Divisors: 1 7 49 113 791 5537 22189 155323 1087261 2507357 17551499 122860493