20346004 has 48 divisors (see below), whose sum is σ = 42900480. Its totient is φ = 8259840.

The previous prime is 20345999. The next prime is 20346019. The reversal of 20346004 is 40064302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42237 + ... + 42715.

It is an arithmetic number, because the mean of its divisors is an integer number (893760).

Almost surely, 2^20346004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20346004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21450240).

20346004 is an abundant number, since it is smaller than the sum of its proper divisors (22554476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20346004 is a wasteful number, since it uses less digits than its factorization.

20346004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20346004 is about 4510.6544979637. The cubic root of 20346004 is about 272.9981528318.

The spelling of 20346004 in words is "twenty million, three hundred forty-six thousand, four".