69428420 has 12 divisors (see below), whose sum is σ = 145799724. Its totient is φ = 27771360.

The previous prime is 69428417. The next prime is 69428477. The reversal of 69428420 is 2482496.

It can be written as a sum of positive squares in 2 ways, for example, as 52765696 + 16662724 = 7264^2 + 4082^2 .

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, 1735691 + ... + 1735730.

It is an arithmetic number, because the mean of its divisors is an integer number (12149977).

Almost surely, 2^69428420 is an apocalyptic number.

It is an amenable number.

69428420 is an abundant number, since it is smaller than the sum of its proper divisors (76371304).

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

69428420 is a wasteful number, since it uses less digits than its factorization.

69428420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3471430 (or 3471428 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 69428420 is about 8332.3718111952. The cubic root of 69428420 is about 411.0037275469.

The spelling of 69428420 in words is "sixty-nine million, four hundred twenty-eight thousand, four hundred twenty".