67920450 has 96 divisors (see below), whose sum is σ = 184696512. Its totient is φ = 16416000.

The previous prime is 67920427. The next prime is 67920481. The reversal of 67920450 is 5402976.

It is a super-2 number, since 2×67920450² = 9226375056405000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118665 + ... + 119235.

It is an arithmetic number, because the mean of its divisors is an integer number (1923922).

Almost surely, 2^67920450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67920450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92348256).

67920450 is an abundant number, since it is smaller than the sum of its proper divisors (116776062).

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

67920450 is a wasteful number, since it uses less digits than its factorization.

67920450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 67920450 is about 8241.3864124915. The cubic root of 67920450 is about 408.0062835441.

The spelling of 67920450 in words is "sixty-seven million, nine hundred twenty thousand, four hundred fifty".