69249428 has 6 divisors (see below), whose sum is σ = 121186506. Its totient is φ = 34624712.

The previous prime is 69249379. The next prime is 69249431. The reversal of 69249428 is 82494296.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49730704 + 19518724 = 7052^2 + 4418^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8656175 + ... + 8656182.

It is an arithmetic number, because the mean of its divisors is an integer number (20197751).

Almost surely, 2^69249428 is an apocalyptic number.

It is an amenable number.

69249428 is a deficient number, since it is larger than the sum of its proper divisors (51937078).

69249428 is a wasteful number, since it uses less digits than its factorization.

69249428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17312361 (or 17312359 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 69249428 is about 8321.6241203265. The cubic root of 69249428 is about 410.6502234636.

The spelling of 69249428 in words is "sixty-nine million, two hundred forty-nine thousand, four hundred twenty-eight".