65402228 has 6 divisors (see below), whose sum is σ = 114453906. Its totient is φ = 32701112.

The previous prime is 65402201. The next prime is 65402231. The reversal of 65402228 is 82220456.

It can be written as a sum of positive squares in only one way, i.e., 44863204 + 20539024 = 6698^2 + 4532^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65402228.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8175275 + ... + 8175282.

It is an arithmetic number, because the mean of its divisors is an integer number (19075651).

Almost surely, 2^65402228 is an apocalyptic number.

It is an amenable number.

65402228 is a deficient number, since it is larger than the sum of its proper divisors (49051678).

65402228 is a wasteful number, since it uses less digits than its factorization.

65402228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16350561 (or 16350559 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 65402228 is about 8087.1643979828. The cubic root of 65402228 is about 402.9002291875.

The spelling of 65402228 in words is "sixty-five million, four hundred two thousand, two hundred twenty-eight".