63944130 has 64 divisors (see below), whose sum is σ = 161274240. Its totient is φ = 16203264.

The previous prime is 63944099. The next prime is 63944147. The reversal of 63944130 is 3144936.

It is a super-2 number, since 2×63944130² = 8177703522913800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57742 + ... + 58838.

It is an arithmetic number, because the mean of its divisors is an integer number (2519910).

Almost surely, 2^63944130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63944130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80637120).

63944130 is an abundant number, since it is smaller than the sum of its proper divisors (97330110).

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

63944130 is a wasteful number, since it uses less digits than its factorization.

63944130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 63944130 is about 7996.5073625927. The cubic root of 63944130 is about 399.8835702803.

The spelling of 63944130 in words is "sixty-three million, nine hundred forty-four thousand, one hundred thirty".