69390428 has 12 divisors (see below), whose sum is σ = 123424392. Its totient is φ = 34126320.

The previous prime is 69390403. The next prime is 69390437. The reversal of 69390428 is 82409396.

It is a happy number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141950 + ... + 142437.

It is an arithmetic number, because the mean of its divisors is an integer number (10285366).

Almost surely, 2^69390428 is an apocalyptic number.

It is an amenable number.

69390428 is a deficient number, since it is larger than the sum of its proper divisors (54033964).

69390428 is a wasteful number, since it uses less digits than its factorization.

69390428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284452 (or 284450 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 69390428 is about 8330.0917161818. The cubic root of 69390428 is about 410.9287452717.

The spelling of 69390428 in words is "sixty-nine million, three hundred ninety thousand, four hundred twenty-eight".