20270078 has 4 divisors (see below), whose sum is σ = 30405120. Its totient is φ = 10135038.

The previous prime is 20270077. The next prime is 20270083. The reversal of 20270078 is 87007202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20270077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5067518 + ... + 5067521.

It is an arithmetic number, because the mean of its divisors is an integer number (7601280).

Almost surely, 2^20270078 is an apocalyptic number.

20270078 is a deficient number, since it is larger than the sum of its proper divisors (10135042).

20270078 is a wasteful number, since it uses less digits than its factorization.

20270078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135041.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 20270078 is about 4502.2303361778. The cubic root of 20270078 is about 272.6581434824.

The spelling of 20270078 in words is "twenty million, two hundred seventy thousand, seventy-eight".