20292238 has 4 divisors (see below), whose sum is σ = 30438360. Its totient is φ = 10146118.

The previous prime is 20292227. The next prime is 20292241. The reversal of 20292238 is 83229202.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5073058 + ... + 5073061.

It is an arithmetic number, because the mean of its divisors is an integer number (7609590).

Almost surely, 2^20292238 is an apocalyptic number.

20292238 is a deficient number, since it is larger than the sum of its proper divisors (10146122).

20292238 is a wasteful number, since it uses less digits than its factorization.

20292238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10146121.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20292238 is about 4504.6906664054. The cubic root of 20292238 is about 272.7574672899.

The spelling of 20292238 in words is "twenty million, two hundred ninety-two thousand, two hundred thirty-eight".