20149468 has 12 divisors (see below), whose sum is σ = 35294112. Its totient is φ = 10065440.

The previous prime is 20149457. The next prime is 20149469. The reversal of 20149468 is 86494102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20149469) 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, 5421 + ... + 8347.

It is an arithmetic number, because the mean of its divisors is an integer number (2941176).

Almost surely, 2^20149468 is an apocalyptic number.

It is an amenable number.

20149468 is a deficient number, since it is larger than the sum of its proper divisors (15144644).

20149468 is a wasteful number, since it uses less digits than its factorization.

20149468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4652 (or 4650 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 20149468 is about 4488.8158794943. The cubic root of 20149468 is about 272.1162817408.

The spelling of 20149468 in words is "twenty million, one hundred forty-nine thousand, four hundred sixty-eight".