101630220 has 48 divisors (see below), whose sum is σ = 285169248. Its totient is φ = 27043840.

The previous prime is 101630219. The next prime is 101630227. The reversal of 101630220 is 22036101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 101630220.

It is not an unprimeable number, because it can be changed into a prime (101630227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31900 + ... + 34940.

It is an arithmetic number, because the mean of its divisors is an integer number (5941026).

Almost surely, 2^101630220 is an apocalyptic number.

101630220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101630220 is an abundant number, since it is smaller than the sum of its proper divisors (183539028).

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

101630220 is a wasteful number, since it uses less digits than its factorization.

101630220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610 (or 3608 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 101630220 is about 10081.1814783784. The cubic root of 101630220 is about 466.6675702930.

Adding to 101630220 its reverse (22036101), we get a palindrome (123666321).

The spelling of 101630220 in words is "one hundred one million, six hundred thirty thousand, two hundred twenty".