64236480 has 336 divisors, whose sum is σ = 259445760. Its totient is φ = 13178880.

The previous prime is 64236467. The next prime is 64236481. The reversal of 64236480 is 8463246.

It is a tau number, because it is divible by the number of its divisors (336).

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

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64236481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 813081 + ... + 813159.

It is an arithmetic number, because the mean of its divisors is an integer number (772160).

Almost surely, 2^64236480 is an apocalyptic number.

64236480 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 64236480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129722880).

64236480 is an abundant number, since it is smaller than the sum of its proper divisors (195209280).

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

64236480 is a wasteful number, since it uses less digits than its factorization.

64236480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 64236480 is about 8014.7663721409. The cubic root of 64236480 is about 400.4920611081.

The spelling of 64236480 in words is "sixty-four million, two hundred thirty-six thousand, four hundred eighty".