20275442 has 8 divisors (see below), whose sum is σ = 33178032. Its totient is φ = 9216100.

The previous prime is 20275433. The next prime is 20275469. The reversal of 20275442 is 24457202.

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

It is a super-2 number, since 2×20275442² = 822187096590728, which contains 22 as substring.

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, 460784 + ... + 460827.

It is an arithmetic number, because the mean of its divisors is an integer number (4147254).

Almost surely, 2^20275442 is an apocalyptic number.

20275442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20275442 is a deficient number, since it is larger than the sum of its proper divisors (12902590).

20275442 is a wasteful number, since it uses less digits than its factorization.

20275442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921624.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 20275442 is about 4502.8260015239. The cubic root of 20275442 is about 272.6821922189.

The spelling of 20275442 in words is "twenty million, two hundred seventy-five thousand, four hundred forty-two".