100548820 has 24 divisors (see below), whose sum is σ = 212068584. Its totient is φ = 40045056.

The previous prime is 100548809. The next prime is 100548827. The reversal of 100548820 is 28845001.

It can be written as a sum of positive squares in 4 ways, for example, as 12264004 + 88284816 = 3502^2 + 9396^2 .

It is a super-2 number, since 2×100548820² = 20220130406784800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100548827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6129 + ... + 15448.

It is an arithmetic number, because the mean of its divisors is an integer number (8836191).

Almost surely, 2^100548820 is an apocalyptic number.

100548820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100548820 is an abundant number, since it is smaller than the sum of its proper divisors (111519764).

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

100548820 is a wasteful number, since it uses less digits than its factorization.

100548820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21819 (or 21817 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 100548820 is about 10027.4034525394. The cubic root of 100548820 is about 465.0064669390.

The spelling of 100548820 in words is "one hundred million, five hundred forty-eight thousand, eight hundred twenty".