20634238 has 8 divisors (see below), whose sum is σ = 31671288. Its totient is φ = 10077144.

The previous prime is 20634221. The next prime is 20634241. The reversal of 20634238 is 83243602.

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, 119881 + ... + 120052.

It is an arithmetic number, because the mean of its divisors is an integer number (3958911).

Almost surely, 2^20634238 is an apocalyptic number.

20634238 is a deficient number, since it is larger than the sum of its proper divisors (11037050).

20634238 is a wasteful number, since it uses less digits than its factorization.

20634238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239978.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20634238 is about 4542.4924876107. The cubic root of 20634238 is about 274.2812658680.

The spelling of 20634238 in words is "twenty million, six hundred thirty-four thousand, two hundred thirty-eight".