20154934 has 8 divisors (see below), whose sum is σ = 31823640. Its totient is φ = 9547056.

The previous prime is 20154907. The next prime is 20154941. The reversal of 20154934 is 43945102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265159 + ... + 265234.

It is an arithmetic number, because the mean of its divisors is an integer number (3977955).

Almost surely, 2^20154934 is an apocalyptic number.

20154934 is a deficient number, since it is larger than the sum of its proper divisors (11668706).

20154934 is a wasteful number, since it uses less digits than its factorization.

20154934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530414.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 20154934 is about 4489.4246847453. The cubic root of 20154934 is about 272.1408854197.

The spelling of 20154934 in words is "twenty million, one hundred fifty-four thousand, nine hundred thirty-four".