65038290 has 32 divisors (see below), whose sum is σ = 156790080. Its totient is φ = 17265984.

The previous prime is 65038247. The next prime is 65038297. The reversal of 65038290 is 9283056.

It is a happy number.

It is a super-2 number, since 2×65038290² = 8459958332248200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65038297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2137 + ... + 11603.

It is an arithmetic number, because the mean of its divisors is an integer number (4899690).

Almost surely, 2^65038290 is an apocalyptic number.

65038290 is an abundant number, since it is smaller than the sum of its proper divisors (91751790).

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

65038290 is a wasteful number, since it uses less digits than its factorization.

65038290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9706.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 65038290 is about 8064.6320436831. The cubic root of 65038290 is about 402.1515109199.

The spelling of 65038290 in words is "sixty-five million, thirty-eight thousand, two hundred ninety".