20149754 has 8 divisors (see below), whose sum is σ = 30264948. Its totient is φ = 10061440.

The previous prime is 20149741. The next prime is 20149799. The reversal of 20149754 is 45794102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17181025 + 2968729 = 4145^2 + 1723^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20149754.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4727 + ... + 7914.

Almost surely, 2^20149754 is an apocalyptic number.

20149754 is a deficient number, since it is larger than the sum of its proper divisors (10115194).

20149754 is a wasteful number, since it uses less digits than its factorization.

20149754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13440.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 20149754 is about 4488.8477363350. The cubic root of 20149754 is about 272.1175692006.

The spelling of 20149754 in words is "twenty million, one hundred forty-nine thousand, seven hundred fifty-four".