20748378 has 32 divisors (see below), whose sum is σ = 48585600. Its totient is φ = 5783040.

The previous prime is 20748373. The next prime is 20748383. The reversal of 20748378 is 87384702.

It is an interprime number because it is at equal distance from previous prime (20748373) and next prime (20748383).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20748373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4303 + ... + 7746.

It is an arithmetic number, because the mean of its divisors is an integer number (1518300).

Almost surely, 2^20748378 is an apocalyptic number.

20748378 is an abundant number, since it is smaller than the sum of its proper divisors (27837222).

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

20748378 is a wasteful number, since it uses less digits than its factorization.

20748378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12102.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 20748378 is about 4555.0387484631. The cubic root of 20748378 is about 274.7860727439.

The spelling of 20748378 in words is "twenty million, seven hundred forty-eight thousand, three hundred seventy-eight".