100728534 has 8 divisors (see below), whose sum is σ = 201457080. Its totient is φ = 33576176.

The previous prime is 100728533. The next prime is 100728547. The reversal of 100728534 is 435827001.

It is a sphenic number, since it is the product of 3 distinct primes.

100728534 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100728533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8394039 + ... + 8394050.

It is an arithmetic number, because the mean of its divisors is an integer number (25182135).

Almost surely, 2^100728534 is an apocalyptic number.

100728534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

100728534 is a wasteful number, since it uses less digits than its factorization.

100728534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16788094.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 100728534 is about 10036.3605953553. The cubic root of 100728534 is about 465.2833421710.

The spelling of 100728534 in words is "one hundred million, seven hundred twenty-eight thousand, five hundred thirty-four".