20346700 has 72 divisors (see below), whose sum is σ = 49215600. Its totient is φ = 7238400.

The previous prime is 20346679. The next prime is 20346713. The reversal of 20346700 is 764302.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58126 + ... + 58474.

It is an arithmetic number, because the mean of its divisors is an integer number (683550).

Almost surely, 2^20346700 is an apocalyptic number.

20346700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20346700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24607800).

20346700 is an abundant number, since it is smaller than the sum of its proper divisors (28868900).

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

20346700 is a wasteful number, since it uses less digits than its factorization.

20346700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 20346700 is about 4510.7316479702. The cubic root of 20346700 is about 273.0012657207.

The spelling of 20346700 in words is "twenty million, three hundred forty-six thousand, seven hundred".