20738078 has 4 divisors (see below), whose sum is σ = 31107120. Its totient is φ = 10369038.

The previous prime is 20738057. The next prime is 20738119. The reversal of 20738078 is 87083702.

It is a happy number.

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

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, 5184518 + ... + 5184521.

It is an arithmetic number, because the mean of its divisors is an integer number (7776780).

Almost surely, 2^20738078 is an apocalyptic number.

20738078 is a deficient number, since it is larger than the sum of its proper divisors (10369042).

20738078 is a wasteful number, since it uses less digits than its factorization.

20738078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10369041.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 20738078 is about 4553.9079920438. The cubic root of 20738078 is about 274.7405950521.

The spelling of 20738078 in words is "twenty million, seven hundred thirty-eight thousand, seventy-eight".