65428434 has 12 divisors (see below), whose sum is σ = 141761646. Its totient is φ = 21809472.

The previous prime is 65428411. The next prime is 65428453. The reversal of 65428434 is 43482456.

65428434 is a `hidden beast` number, since 6 + 542 + 84 + 34 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52490025 + 12938409 = 7245^2 + 3597^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1817439 + ... + 1817474.

Almost surely, 2^65428434 is an apocalyptic number.

65428434 is an abundant number, since it is smaller than the sum of its proper divisors (76333212).

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

65428434 is a wasteful number, since it uses less digits than its factorization.

65428434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3634921 (or 3634918 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 65428434 is about 8088.7844575066. The cubic root of 65428434 is about 402.9540346609.

The spelling of 65428434 in words is "sixty-five million, four hundred twenty-eight thousand, four hundred thirty-four".