20906350 has 24 divisors (see below), whose sum is σ = 39013128. Its totient is φ = 8335200.

The previous prime is 20906341. The next prime is 20906371. The reversal of 20906350 is 5360902.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22597 + ... + 23503.

It is an arithmetic number, because the mean of its divisors is an integer number (1625547).

Almost surely, 2^20906350 is an apocalyptic number.

20906350 is a deficient number, since it is larger than the sum of its proper divisors (18106778).

20906350 is a wasteful number, since it uses less digits than its factorization.

20906350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 20906350 is about 4572.3462248609. The cubic root of 20906350 is about 275.4816902137.

The spelling of 20906350 in words is "twenty million, nine hundred six thousand, three hundred fifty".