20272258 has 4 divisors (see below), whose sum is σ = 30408390. Its totient is φ = 10136128.

The previous prime is 20272249. The next prime is 20272267. The reversal of 20272258 is 85227202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85227202 = 2 ⋅42613601.

It is an interprime number because it is at equal distance from previous prime (20272249) and next prime (20272267).

It can be written as a sum of positive squares in only one way, i.e., 18207289 + 2064969 = 4267^2 + 1437^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5068063 + ... + 5068066.

Almost surely, 2^20272258 is an apocalyptic number.

20272258 is a deficient number, since it is larger than the sum of its proper divisors (10136132).

20272258 is a wasteful number, since it uses less digits than its factorization.

20272258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10136131.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 20272258 is about 4502.4724318978. The cubic root of 20272258 is about 272.6679177162.

The spelling of 20272258 in words is "twenty million, two hundred seventy-two thousand, two hundred fifty-eight".