65120030 has 32 divisors (see below), whose sum is σ = 130649760. Its totient is φ = 23224320.

The previous prime is 65120009. The next prime is 65120039. The reversal of 65120030 is 3002156.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 65119990 and 65120008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65120039) 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, 6851 + ... + 13310.

It is an arithmetic number, because the mean of its divisors is an integer number (4082805).

Almost surely, 2^65120030 is an apocalyptic number.

65120030 is an abundant number, since it is smaller than the sum of its proper divisors (65529730).

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

65120030 is a wasteful number, since it uses less digits than its factorization.

65120030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20204.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 65120030 is about 8069.6982595386. The cubic root of 65120030 is about 402.3199148095.

Adding to 65120030 its reverse (3002156), we get a palindrome (68122186).

The spelling of 65120030 in words is "sixty-five million, one hundred twenty thousand, thirty".