138896802 has 128 divisors (see below), whose sum is σ = 366796800. Its totient is φ = 38491200.

The previous prime is 138896777. The next prime is 138896827. The reversal of 138896802 is 208698831.

It is an interprime number because it is at equal distance from previous prime (138896777) and next prime (138896827).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 349668 + ... + 350064.

It is an arithmetic number, because the mean of its divisors is an integer number (2865600).

Almost surely, 2^138896802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138896802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183398400).

138896802 is an abundant number, since it is smaller than the sum of its proper divisors (227899998).

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

138896802 is a wasteful number, since it uses less digits than its factorization.

138896802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 138896802 is about 11785.4487398656. The cubic root of 138896802 is about 517.8819192893.

The spelling of 138896802 in words is "one hundred thirty-eight million, eight hundred ninety-six thousand, eight hundred two".