20346930 has 64 divisors (see below), whose sum is σ = 54691200. Its totient is φ = 5382720.

The previous prime is 20346923. The next prime is 20346983. The reversal of 20346930 is 3964302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20346894 and 20346903.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48120 + ... + 48540.

It is an arithmetic number, because the mean of its divisors is an integer number (854550).

Almost surely, 2^20346930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20346930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27345600).

20346930 is an abundant number, since it is smaller than the sum of its proper divisors (34344270).

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

20346930 is a wasteful number, since it uses less digits than its factorization.

20346930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 20346930 is about 4510.7571426535. The cubic root of 20346930 is about 273.0022943896.

The spelling of 20346930 in words is "twenty million, three hundred forty-six thousand, nine hundred thirty".