21077602 has 16 divisors (see below), whose sum is σ = 38912832. Its totient is φ = 8338320.

The previous prime is 21077599. The next prime is 21077627. The reversal of 21077602 is 20677012.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 57724 + ... + 58087.

It is an arithmetic number, because the mean of its divisors is an integer number (2432052).

Almost surely, 2^21077602 is an apocalyptic number.

21077602 is a deficient number, since it is larger than the sum of its proper divisors (17835230).

21077602 is a wasteful number, since it uses less digits than its factorization.

21077602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115833.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 21077602 is about 4591.0349595707. The cubic root of 21077602 is about 276.2318380394.

The spelling of 21077602 in words is "twenty-one million, seventy-seven thousand, six hundred two".