65432280 has 64 divisors (see below), whose sum is σ = 201615840. Its totient is φ = 16975872.

The previous prime is 65432249. The next prime is 65432281. The reversal of 65432280 is 8223456.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65432281) 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, 2929 + ... + 11808.

Almost surely, 2^65432280 is an apocalyptic number.

65432280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65432280 is an abundant number, since it is smaller than the sum of its proper divisors (136183560).

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

65432280 is a wasteful number, since it uses less digits than its factorization.

65432280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14788 (or 14784 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 65432280 is about 8089.0221905988. The cubic root of 65432280 is about 402.9619299584.

The spelling of 65432280 in words is "sixty-five million, four hundred thirty-two thousand, two hundred eighty".