69390738 has 12 divisors (see below), whose sum is σ = 150346638. Its totient is φ = 23130240.

The previous prime is 69390721. The next prime is 69390743. The reversal of 69390738 is 83709396.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 59861169 + 9529569 = 7737^2 + 3087^2 .

It is a junction number, because it is equal to n+sod(n) for n = 69390693 and 69390702.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1927503 + ... + 1927538.

Almost surely, 2^69390738 is an apocalyptic number.

69390738 is an abundant number, since it is smaller than the sum of its proper divisors (80955900).

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

69390738 is a wasteful number, since it uses less digits than its factorization.

69390738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855049 (or 3855046 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 69390738 is about 8330.1103233991. The cubic root of 69390738 is about 410.9293572088.

The spelling of 69390738 in words is "sixty-nine million, three hundred ninety thousand, seven hundred thirty-eight".