20148764 has 6 divisors (see below), whose sum is σ = 35260344. Its totient is φ = 10074380.

The previous prime is 20148763. The next prime is 20148767. The reversal of 20148764 is 46784102.

It is a self number, because there is not a number n which added to its sum of digits gives 20148764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20148763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2518592 + ... + 2518599.

It is an arithmetic number, because the mean of its divisors is an integer number (5876724).

Almost surely, 2^20148764 is an apocalyptic number.

It is an amenable number.

20148764 is a deficient number, since it is larger than the sum of its proper divisors (15111580).

20148764 is a wasteful number, since it uses less digits than its factorization.

20148764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037195 (or 5037193 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 20148764 is about 4488.7374616923. The cubic root of 20148764 is about 272.1131125571.

The spelling of 20148764 in words is "twenty million, one hundred forty-eight thousand, seven hundred sixty-four".