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137048405 = 5132108437
BaseRepresentation
bin10000010101100…
…11000101010101
3100112212210001212
420022303011111
5240041022110
621333231205
73252615014
oct1012630525
9315783055
10137048405
11703a654a
1239a92505
1322515a40
14142b6a7b
15c071e05
hex82b3155

137048405 has 8 divisors (see below), whose sum is σ = 177108792. Its totient is φ = 101204928.

The previous prime is 137048399. The next prime is 137048423. The reversal of 137048405 is 504840731.

It can be written as a sum of positive squares in 4 ways, for example, as 26399044 + 110649361 = 5138^2 + 10519^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 137048405 - 216 = 136982869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1054154 + ... + 1054283.

It is an arithmetic number, because the mean of its divisors is an integer number (22138599).

Almost surely, 2137048405 is an apocalyptic number.

It is an amenable number.

137048405 is a deficient number, since it is larger than the sum of its proper divisors (40060387).

137048405 is a wasteful number, since it uses less digits than its factorization.

137048405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108455.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 137048405 is about 11706.7674872272. The cubic root of 137048405 is about 515.5743803629.

The spelling of 137048405 in words is "one hundred thirty-seven million, forty-eight thousand, four hundred five".

Divisors: 1 5 13 65 2108437 10542185 27409681 137048405