69428015 has 8 divisors (see below), whose sum is σ = 85251408. Its totient is φ = 54250560.

The previous prime is 69428011. The next prime is 69428063. The reversal of 69428015 is 51082496.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69428015 - 2² = 69428011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69428011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161246 + ... + 161675.

It is an arithmetic number, because the mean of its divisors is an integer number (10656426).

Almost surely, 2^69428015 is an apocalyptic number.

69428015 is a deficient number, since it is larger than the sum of its proper divisors (15823393).

69428015 is a wasteful number, since it uses less digits than its factorization.

69428015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322969.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 69428015 is about 8332.3475083556. The cubic root of 69428015 is about 411.0029283697.

The spelling of 69428015 in words is "sixty-nine million, four hundred twenty-eight thousand, fifteen".