20378498 has 8 divisors (see below), whose sum is σ = 34934592. Its totient is φ = 8733636.

The previous prime is 20378497. The next prime is 20378513. The reversal of 20378498 is 89487302.

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

It is not an unprimeable number, because it can be changed into a prime (20378497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727790 + ... + 727817.

It is an arithmetic number, because the mean of its divisors is an integer number (4366824).

Almost surely, 2^20378498 is an apocalyptic number.

20378498 is a deficient number, since it is larger than the sum of its proper divisors (14556094).

20378498 is a wasteful number, since it uses less digits than its factorization.

20378498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455616.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 20378498 is about 4514.2549772914. The cubic root of 20378498 is about 273.1434079514.

The spelling of 20378498 in words is "twenty million, three hundred seventy-eight thousand, four hundred ninety-eight".