20274424 has 8 divisors (see below), whose sum is σ = 38014560. Its totient is φ = 10137208.

The previous prime is 20274413. The next prime is 20274427. The reversal of 20274424 is 42447202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20274424² = 822104537063552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20274427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1267144 + ... + 1267159.

It is an arithmetic number, because the mean of its divisors is an integer number (4751820).

Almost surely, 2^20274424 is an apocalyptic number.

It is an amenable number.

20274424 is a deficient number, since it is larger than the sum of its proper divisors (17740136).

20274424 is a wasteful number, since it uses less digits than its factorization.

20274424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534309 (or 2534305 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 20274424 is about 4502.7129599831. The cubic root of 20274424 is about 272.6776284857.

The spelling of 20274424 in words is "twenty million, two hundred seventy-four thousand, four hundred twenty-four".