63438100 has 72 divisors (see below), whose sum is σ = 151927776. Its totient is φ = 22800000.

The previous prime is 63438049. The next prime is 63438103. The reversal of 63438100 is 183436.

It is a super-2 number, since 2×63438100² = 8048785063220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63438103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110815 + ... + 111385.

It is an arithmetic number, because the mean of its divisors is an integer number (2110108).

Almost surely, 2^63438100 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 63438100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75963888).

63438100 is an abundant number, since it is smaller than the sum of its proper divisors (88489676).

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

63438100 is a wasteful number, since it uses less digits than its factorization.

63438100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 63438100 is about 7964.8038268372. The cubic root of 63438100 is about 398.8259322841.

The spelling of 63438100 in words is "sixty-three million, four hundred thirty-eight thousand, one hundred".