65038380 has 48 divisors (see below), whose sum is σ = 198664704. Its totient is φ = 15766720.

The previous prime is 65038333. The next prime is 65038399. The reversal of 65038380 is 8383056.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48612 + ... + 49931.

It is an arithmetic number, because the mean of its divisors is an integer number (4138848).

Almost surely, 2^65038380 is an apocalyptic number.

65038380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65038380 is an abundant number, since it is smaller than the sum of its proper divisors (133626324).

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

65038380 is a wasteful number, since it uses less digits than its factorization.

65038380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98566 (or 98564 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 65038380 is about 8064.6376236010. The cubic root of 65038380 is about 402.1516964190.

The spelling of 65038380 in words is "sixty-five million, thirty-eight thousand, three hundred eighty".