20148738 has 8 divisors (see below), whose sum is σ = 40297488. Its totient is φ = 6716244.

The previous prime is 20148679. The next prime is 20148763. The reversal of 20148738 is 83784102.

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

20148738 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20148699 and 20148708.

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, 1679056 + ... + 1679067.

It is an arithmetic number, because the mean of its divisors is an integer number (5037186).

Almost surely, 2^20148738 is an apocalyptic number.

20148738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20148738 is a wasteful number, since it uses less digits than its factorization.

20148738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358128.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 20148738 is about 4488.7345655541. The cubic root of 20148738 is about 272.1129955120.

The spelling of 20148738 in words is "twenty million, one hundred forty-eight thousand, seven hundred thirty-eight".