100345020 has 48 divisors (see below), whose sum is σ = 282078720. Its totient is φ = 26652736.

The previous prime is 100345013. The next prime is 100345027. The reversal of 100345020 is 20543001.

It is an interprime number because it is at equal distance from previous prime (100345013) and next prime (100345027).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100345027) 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, 12601 + ... + 18959.

It is an arithmetic number, because the mean of its divisors is an integer number (5876640).

Almost surely, 2^100345020 is an apocalyptic number.

100345020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100345020 is an abundant number, since it is smaller than the sum of its proper divisors (181733700).

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

100345020 is a wasteful number, since it uses less digits than its factorization.

100345020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6634 (or 6632 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 100345020 is about 10017.2361457640. The cubic root of 100345020 is about 464.6920842738.

Adding to 100345020 its reverse (20543001), we get a palindrome (120888021).

The spelling of 100345020 in words is "one hundred million, three hundred forty-five thousand, twenty".