20246678 has 4 divisors (see below), whose sum is σ = 30370020. Its totient is φ = 10123338.

The previous prime is 20246657. The next prime is 20246683. The reversal of 20246678 is 87664202.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5061668 + ... + 5061671.

It is an arithmetic number, because the mean of its divisors is an integer number (7592505).

Almost surely, 2^20246678 is an apocalyptic number.

20246678 is a deficient number, since it is larger than the sum of its proper divisors (10123342).

20246678 is a wasteful number, since it uses less digits than its factorization.

20246678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10123341.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 20246678 is about 4499.6308737495. The cubic root of 20246678 is about 272.5531832341.

The spelling of 20246678 in words is "twenty million, two hundred forty-six thousand, six hundred seventy-eight".