20457002 has 8 divisors (see below), whose sum is σ = 30808512. Its totient is φ = 10187500.

The previous prime is 20456987. The next prime is 20457023. The reversal of 20457002 is 20075402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19874 + ... + 20877.

It is an arithmetic number, because the mean of its divisors is an integer number (3851064).

Almost surely, 2^20457002 is an apocalyptic number.

20457002 is a deficient number, since it is larger than the sum of its proper divisors (10351510).

20457002 is a wasteful number, since it uses less digits than its factorization.

20457002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41004.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 20457002 is about 4522.9417418313. The cubic root of 20457002 is about 273.4937015818.

The spelling of 20457002 in words is "twenty million, four hundred fifty-seven thousand, two".