20274554 has 4 divisors (see below), whose sum is σ = 30411834. Its totient is φ = 10137276.

The previous prime is 20274533. The next prime is 20274559. The reversal of 20274554 is 45547202.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 11730625 + 8543929 = 3425^2 + 2923^2 .

It is a super-2 number, since 2×20274554² = 822115079797832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20274559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5068637 + ... + 5068640.

Almost surely, 2^20274554 is an apocalyptic number.

20274554 is a deficient number, since it is larger than the sum of its proper divisors (10137280).

20274554 is a wasteful number, since it uses less digits than its factorization.

20274554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10137279.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 20274554 is about 4502.7273957014. The cubic root of 20274554 is about 272.6782112893.

The spelling of 20274554 in words is "twenty million, two hundred seventy-four thousand, five hundred fifty-four".