20149396 has 6 divisors (see below), whose sum is σ = 35261450. Its totient is φ = 10074696.

The previous prime is 20149391. The next prime is 20149427. The reversal of 20149396 is 69394102.

It can be written as a sum of positive squares in only one way, i.e., 12859396 + 7290000 = 3586^2 + 2700^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20149391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2518671 + ... + 2518678.

Almost surely, 2^20149396 is an apocalyptic number.

It is an amenable number.

20149396 is a deficient number, since it is larger than the sum of its proper divisors (15112054).

20149396 is a wasteful number, since it uses less digits than its factorization.

20149396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037353 (or 5037351 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 20149396 is about 4488.8078595547. The cubic root of 20149396 is about 272.1159576231.

The spelling of 20149396 in words is "twenty million, one hundred forty-nine thousand, three hundred ninety-six".