69138036 has 120 divisors (see below), whose sum is σ = 207752160. Its totient is φ = 19828800.

The previous prime is 69137993. The next prime is 69138053. The reversal of 69138036 is 63083196.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 67206 + ... + 68226.

It is an arithmetic number, because the mean of its divisors is an integer number (1731268).

Almost surely, 2^69138036 is an apocalyptic number.

69138036 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69138036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103876080).

69138036 is an abundant number, since it is smaller than the sum of its proper divisors (138614124).

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

69138036 is a wasteful number, since it uses less digits than its factorization.

69138036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 69138036 is about 8314.9285023986. The cubic root of 69138036 is about 410.4299198460.

The spelling of 69138036 in words is "sixty-nine million, one hundred thirty-eight thousand, thirty-six".