20346460 has 12 divisors (see below), whose sum is σ = 42727608. Its totient is φ = 8138576.

The previous prime is 20346457. The next prime is 20346461. The reversal of 20346460 is 6464302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508642 + ... + 508681.

It is an arithmetic number, because the mean of its divisors is an integer number (3560634).

Almost surely, 2^20346460 is an apocalyptic number.

20346460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20346460 is an abundant number, since it is smaller than the sum of its proper divisors (22381148).

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

20346460 is a wasteful number, since it uses less digits than its factorization.

20346460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017332 (or 1017330 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 20346460 is about 4510.7050446687. The cubic root of 20346460 is about 273.0001923187. Note that the first 3 decimals are identical.

The spelling of 20346460 in words is "twenty million, three hundred forty-six thousand, four hundred sixty".