67452280 has 128 divisors (see below), whose sum is σ = 188928000. Its totient is φ = 21150720.

The previous prime is 67452271. The next prime is 67452283. The reversal of 67452280 is 8225476.

67452280 = 446² + 447² + ... + 662².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67452283) 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, 164716 + ... + 165124.

It is an arithmetic number, because the mean of its divisors is an integer number (1476000).

Almost surely, 2^67452280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67452280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94464000).

67452280 is an abundant number, since it is smaller than the sum of its proper divisors (121475720).

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

67452280 is a wasteful number, since it uses less digits than its factorization.

67452280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 67452280 is about 8212.9337023989. The cubic root of 67452280 is about 407.0666702334.

It can be divided in two parts, 6745 and 2280, that added together give a square (9025 = 95²).

The spelling of 67452280 in words is "sixty-seven million, four hundred fifty-two thousand, two hundred eighty".