20877002 has 4 divisors (see below), whose sum is σ = 31315506. Its totient is φ = 10438500.

The previous prime is 20877001. The next prime is 20877011. The reversal of 20877002 is 20077802.

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

It can be written as a sum of positive squares in only one way, i.e., 15452761 + 5424241 = 3931^2 + 2329^2 .

It is not an unprimeable number, because it can be changed into a prime (20877001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5219249 + ... + 5219252.

Almost surely, 2^20877002 is an apocalyptic number.

20877002 is a deficient number, since it is larger than the sum of its proper divisors (10438504).

20877002 is a wasteful number, since it uses less digits than its factorization.

20877002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10438503.

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

The square root of 20877002 is about 4569.1358045040. The cubic root of 20877002 is about 275.3527242501.

The spelling of 20877002 in words is "twenty million, eight hundred seventy-seven thousand, two".