20091154 has 16 divisors (see below), whose sum is σ = 30796416. Its totient is φ = 9828000.

The previous prime is 20091119. The next prime is 20091163. The reversal of 20091154 is 45119002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20974 + ... + 21910.

It is an arithmetic number, because the mean of its divisors is an integer number (1924776).

Almost surely, 2^20091154 is an apocalyptic number.

20091154 is a deficient number, since it is larger than the sum of its proper divisors (10705262).

20091154 is a wasteful number, since it uses less digits than its factorization.

20091154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 20091154 is about 4482.3156961553. The cubic root of 20091154 is about 271.8535201068.

The spelling of 20091154 in words is "twenty million, ninety-one thousand, one hundred fifty-four".