20457034 has 16 divisors (see below), whose sum is σ = 34786080. Its totient is φ = 8944560.

The previous prime is 20457029. The next prime is 20457037. The reversal of 20457034 is 43075402.

It is not an unprimeable number, because it can be changed into a prime (20457037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20212 + ... + 21199.

It is an arithmetic number, because the mean of its divisors is an integer number (2174130).

Almost surely, 2^20457034 is an apocalyptic number.

20457034 is a deficient number, since it is larger than the sum of its proper divisors (14329046).

20457034 is a wasteful number, since it uses less digits than its factorization.

20457034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41445.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 20457034 is about 4522.9452793506. The cubic root of 20457034 is about 273.4938441865.

The spelling of 20457034 in words is "twenty million, four hundred fifty-seven thousand, thirty-four".