20486402 has 4 divisors (see below), whose sum is σ = 30729606. Its totient is φ = 10243200.

The previous prime is 20486387. The next prime is 20486437. The reversal of 20486402 is 20468402.

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., 15062161 + 5424241 = 3881^2 + 2329^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5121599 + ... + 5121602.

Almost surely, 2^20486402 is an apocalyptic number.

20486402 is a deficient number, since it is larger than the sum of its proper divisors (10243204).

20486402 is a wasteful number, since it uses less digits than its factorization.

20486402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10243203.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 20486402 is about 4526.1906720773. The cubic root of 20486402 is about 273.6246570035.

The spelling of 20486402 in words is "twenty million, four hundred eighty-six thousand, four hundred two".