100878146 has 4 divisors (see below), whose sum is σ = 151317222. Its totient is φ = 50439072.

The previous prime is 100878143. The next prime is 100878191. The reversal of 100878146 is 641878001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 99900025 + 978121 = 9995^2 + 989^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100878143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25219535 + ... + 25219538.

Almost surely, 2^100878146 is an apocalyptic number.

100878146 is a deficient number, since it is larger than the sum of its proper divisors (50439076).

100878146 is an equidigital number, since it uses as much as digits as its factorization.

100878146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50439075.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 100878146 is about 10043.8113283753. The cubic root of 100878146 is about 465.5135898548.

The spelling of 100878146 in words is "one hundred million, eight hundred seventy-eight thousand, one hundred forty-six".