65238428 has 12 divisors (see below), whose sum is σ = 114340632. Its totient is φ = 32569680.

The previous prime is 65238409. The next prime is 65238431. The reversal of 65238428 is 82483256.

It is a super-3 number, since 3×65238428³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 65238391 and 65238400.

It is a congruent number.

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, 9338 + ... + 14753.

It is an arithmetic number, because the mean of its divisors is an integer number (9528386).

Almost surely, 2^65238428 is an apocalyptic number.

It is an amenable number.

65238428 is a deficient number, since it is larger than the sum of its proper divisors (49102204).

65238428 is a wasteful number, since it uses less digits than its factorization.

65238428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24772 (or 24770 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 65238428 is about 8077.0308901229. The cubic root of 65238428 is about 402.5635932081.

The spelling of 65238428 in words is "sixty-five million, two hundred thirty-eight thousand, four hundred twenty-eight".