100145620 has 24 divisors (see below), whose sum is σ = 214276104. Its totient is φ = 39302016.

The previous prime is 100145533. The next prime is 100145621. The reversal of 100145620 is 26541001.

It can be written as a sum of positive squares in 4 ways, for example, as 44970436 + 55175184 = 6706^2 + 7428^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100145621) 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, 46179 + ... + 48298.

It is an arithmetic number, because the mean of its divisors is an integer number (8928171).

Almost surely, 2^100145620 is an apocalyptic number.

100145620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100145620 is an abundant number, since it is smaller than the sum of its proper divisors (114130484).

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

100145620 is a wasteful number, since it uses less digits than its factorization.

100145620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94539 (or 94537 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 100145620 is about 10007.2783512801. The cubic root of 100145620 is about 464.3840768097.

Adding to 100145620 its reverse (26541001), we get a palindrome (126686621).

The spelling of 100145620 in words is "one hundred million, one hundred forty-five thousand, six hundred twenty".