65492280 has 128 divisors (see below), whose sum is σ = 249523200. Its totient is φ = 14967936.

The previous prime is 65492269. The next prime is 65492281. The reversal of 65492280 is 8229456.

65492280 = 865² + 866² + ... + 944².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65492281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3229 + ... + 11891.

It is an arithmetic number, because the mean of its divisors is an integer number (1949400).

Almost surely, 2^65492280 is an apocalyptic number.

65492280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65492280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124761600).

65492280 is an abundant number, since it is smaller than the sum of its proper divisors (184030920).

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

65492280 is a wasteful number, since it uses less digits than its factorization.

65492280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8690 (or 8680 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 65492280 is about 8092.7300708723. The cubic root of 65492280 is about 403.0850614841.

The spelling of 65492280 in words is "sixty-five million, four hundred ninety-two thousand, two hundred eighty".