146228091 has 8 divisors (see below), whose sum is σ = 195607104. Its totient is φ = 97167240.

The previous prime is 146228083. The next prime is 146228111. The reversal of 146228091 is 190822641.

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

It is not a de Polignac number, because 146228091 - 2³ = 146228083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146228011) 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, 78465 + ... + 80306.

It is an arithmetic number, because the mean of its divisors is an integer number (24450888).

Almost surely, 2^146228091 is an apocalyptic number.

146228091 is a deficient number, since it is larger than the sum of its proper divisors (49379013).

146228091 is a wasteful number, since it uses less digits than its factorization.

146228091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159081.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 146228091 is about 12092.4807628542. The cubic root of 146228091 is about 526.8378112185.

The spelling of 146228091 in words is "one hundred forty-six million, two hundred twenty-eight thousand, ninety-one".