101530044 has 192 divisors, whose sum is σ = 340300800. Its totient is φ = 25401600.

The previous prime is 101530021. The next prime is 101530133. The reversal of 101530044 is 440035101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 101529999 and 101530026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 240954 + ... + 241374.

It is an arithmetic number, because the mean of its divisors is an integer number (1772400).

Almost surely, 2^101530044 is an apocalyptic number.

101530044 is a gapful number since it is divisible by the number (14) 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 101530044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170150400).

101530044 is an abundant number, since it is smaller than the sum of its proper divisors (238770756).

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

101530044 is a wasteful number, since it uses less digits than its factorization.

101530044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 101530044 is about 10076.2117881672. The cubic root of 101530044 is about 466.5141898683.

Adding to 101530044 its reverse (440035101), we get a palindrome (541565145).

The spelling of 101530044 in words is "one hundred one million, five hundred thirty thousand, forty-four".