20077702 has 4 divisors (see below), whose sum is σ = 30116556. Its totient is φ = 10038850.

The previous prime is 20077693. The next prime is 20077703. The reversal of 20077702 is 20777002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20777002 = 2 ⋅10388501.

It is a super-2 number, since 2×20077702² = 806228235201608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20077703) by changing a digit.

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 as a sum of consecutive naturals, namely, 5019424 + ... + 5019427.

It is an arithmetic number, because the mean of its divisors is an integer number (7529139).

Almost surely, 2^20077702 is an apocalyptic number.

20077702 is a deficient number, since it is larger than the sum of its proper divisors (10038854).

20077702 is a wasteful number, since it uses less digits than its factorization.

20077702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10038853.

The product of its (nonzero) digits is 1372, while the sum is 25.

The square root of 20077702 is about 4480.8148812465. The cubic root of 20077702 is about 271.7928335309.

The spelling of 20077702 in words is "twenty million, seventy-seven thousand, seven hundred two".