101622720 has 112 divisors (see below), whose sum is σ = 331488288. Its totient is φ = 26357760.

The previous prime is 101622709. The next prime is 101622751. The reversal of 101622720 is 27226101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34090 + ... + 36950.

Almost surely, 2^101622720 is an apocalyptic number.

101622720 is a gapful number since it is divisible by the number (10) 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 101622720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165744144).

101622720 is an abundant number, since it is smaller than the sum of its proper divisors (229865568).

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

101622720 is a wasteful number, since it uses less digits than its factorization.

101622720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918 (or 2908 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 101622720 is about 10080.8094913057. The cubic root of 101622720 is about 466.6560904633.

Adding to 101622720 its reverse (27226101), we get a palindrome (128848821).

The spelling of 101622720 in words is "one hundred one million, six hundred twenty-two thousand, seven hundred twenty".