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67079428 = 22132774657
BaseRepresentation
bin1111111111100…
…0110100000100
311200012222200021
43333320310010
5114133020203
610353424524
71443110563
oct377706404
9150188607
1067079428
1134956849
121a56b144
1310b88390
148ca1bda
155d505bd
hex3ff8d04

67079428 has 24 divisors (see below), whose sum is σ = 126902552. Its totient is φ = 30841344.

The previous prime is 67079423. The next prime is 67079429. The reversal of 67079428 is 82497076.

It can be written as a sum of positive squares in 4 ways, for example, as 2566404 + 64513024 = 1602^2 + 8032^2 .

It is not an unprimeable number, because it can be changed into a prime (67079423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12076 + ... + 16732.

Almost surely, 267079428 is an apocalyptic number.

It is an amenable number.

67079428 is a deficient number, since it is larger than the sum of its proper divisors (59823124).

67079428 is a wasteful number, since it uses less digits than its factorization.

67079428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951 (or 4949 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 67079428 is about 8190.2031720831. The cubic root of 67079428 is about 406.3152444954.

The spelling of 67079428 in words is "sixty-seven million, seventy-nine thousand, four hundred twenty-eight".

Divisors: 1 2 4 13 26 52 277 554 1108 3601 4657 7202 9314 14404 18628 60541 121082 242164 1289989 2579978 5159956 16769857 33539714 67079428