101443820 has 12 divisors (see below), whose sum is σ = 213032064. Its totient is φ = 40577520.

The previous prime is 101443807. The next prime is 101443843. The reversal of 101443820 is 28344101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2536076 + ... + 2536115.

It is an arithmetic number, because the mean of its divisors is an integer number (17752672).

Almost surely, 2^101443820 is an apocalyptic number.

101443820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101443820 is an abundant number, since it is smaller than the sum of its proper divisors (111588244).

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

101443820 is a wasteful number, since it uses less digits than its factorization.

101443820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072200 (or 5072198 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 101443820 is about 10071.9322873022. The cubic root of 101443820 is about 466.3820906715.

Adding to 101443820 its reverse (28344101), we get a palindrome (129787921).

The spelling of 101443820 in words is "one hundred one million, four hundred forty-three thousand, eight hundred twenty".