63446040 has 192 divisors, whose sum is σ = 249687360. Its totient is φ = 13639680.

The previous prime is 63446021. The next prime is 63446041. The reversal of 63446040 is 4064436.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 63445995 and 63446013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63446041) 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, 42100 + ... + 43580.

It is an arithmetic number, because the mean of its divisors is an integer number (1300455).

Almost surely, 2^63446040 is an apocalyptic number.

63446040 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 63446040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124843680).

63446040 is an abundant number, since it is smaller than the sum of its proper divisors (186241320).

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

63446040 is a wasteful number, since it uses less digits than its factorization.

63446040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522 (or 1515 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 63446040 is about 7965.3022541521. The cubic root of 63446040 is about 398.8425707910.

The spelling of 63446040 in words is "sixty-three million, four hundred forty-six thousand, forty".