60428809 has 6 divisors (see below), whose sum is σ = 70294794. Its totient is φ = 51796080.

The previous prime is 60428801. The next prime is 60428813. The reversal of 60428809 is 90882406.

It can be written as a sum of positive squares in only one way, i.e., 40043584 + 20385225 = 6328^2 + 4515^2 .

It is not a de Polignac number, because 60428809 - 2³ = 60428801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60428801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 616572 + ... + 616669.

It is an arithmetic number, because the mean of its divisors is an integer number (11715799).

Almost surely, 2^60428809 is an apocalyptic number.

It is an amenable number.

60428809 is a deficient number, since it is larger than the sum of its proper divisors (9865985).

60428809 is a wasteful number, since it uses less digits than its factorization.

60428809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233255 (or 1233248 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 60428809 is about 7773.5969151996. The cubic root of 60428809 is about 392.4171791662.

The spelling of 60428809 in words is "sixty million, four hundred twenty-eight thousand, eight hundred nine".