69927138 has 54 divisors (see below), whose sum is σ = 159512769. Its totient is φ = 22989744.

The previous prime is 69927133. The next prime is 69927161. The reversal of 69927138 is 83172996.

It can be written as a sum of positive squares in 2 ways, for example, as 69605649 + 321489 = 8343^2 + 567^2 .

It is a tau number, because it is divible by the number of its divisors (54).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5913.

It is a junction number, because it is equal to n+sod(n) for n = 69927093 and 69927102.

It is not an unprimeable number, because it can be changed into a prime (69927133) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 957870 + ... + 957942.

Almost surely, 2^69927138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69927138

69927138 is an abundant number, since it is smaller than the sum of its proper divisors (89585631).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69927138 is an frugal number, since it uses more digits than its factorization.

69927138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 78 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 69927138 is about 8362.2447943121. The cubic root of 69927138 is about 411.9854874393.

The spelling of 69927138 in words is "sixty-nine million, nine hundred twenty-seven thousand, one hundred thirty-eight".