20745378 has 24 divisors (see below), whose sum is σ = 47314800. Its totient is φ = 6551064.

The previous prime is 20745343. The next prime is 20745421. The reversal of 20745378 is 87354702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29988 + ... + 30671.

It is an arithmetic number, because the mean of its divisors is an integer number (1971450).

Almost surely, 2^20745378 is an apocalyptic number.

20745378 is an abundant number, since it is smaller than the sum of its proper divisors (26569422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20745378 is a wasteful number, since it uses less digits than its factorization.

20745378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60686 (or 60683 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 20745378 is about 4554.7094309078. The cubic root of 20745378 is about 274.7728283680.

The spelling of 20745378 in words is "twenty million, seven hundred forty-five thousand, three hundred seventy-eight".