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61232429 = 281217909
BaseRepresentation
bin1110100110010…
…1010100101101
311021012221002202
43221211110231
5111133414204
610024231245
71342316126
oct351452455
9137187082
1061232429
1131622915
121860b525
13c8bbc0b
1481bd04d
155597e1e
hex3a6552d

61232429 has 4 divisors (see below), whose sum is σ = 61450620. Its totient is φ = 61014240.

The previous prime is 61232389. The next prime is 61232441. The reversal of 61232429 is 92423216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21252100 + 39980329 = 4610^2 + 6323^2 .

It is a cyclic number.

It is not a de Polignac number, because 61232429 - 28 = 61232173 is a prime.

It is a super-2 number, since 2×612324292 = 7498820722480082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61232489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108674 + ... + 109235.

It is an arithmetic number, because the mean of its divisors is an integer number (15362655).

Almost surely, 261232429 is an apocalyptic number.

It is an amenable number.

61232429 is a deficient number, since it is larger than the sum of its proper divisors (218191).

61232429 is a wasteful number, since it uses less digits than its factorization.

61232429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218190.

The product of its digits is 5184, while the sum is 29.

The square root of 61232429 is about 7825.1152707165. The cubic root of 61232429 is about 394.1490606426.

The spelling of 61232429 in words is "sixty-one million, two hundred thirty-two thousand, four hundred twenty-nine".

Divisors: 1 281 217909 61232429