20754828 has 18 divisors (see below), whose sum is σ = 52463684. Its totient is φ = 6918264.

The previous prime is 20754827. The next prime is 20754829. The reversal of 20754828 is 82845702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20754827) and next prime (20754829).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 576523 = 20754828 / (2 + 0 + 7 + 5 + 4 + 8 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 20754792 and 20754801.

It is not an unprimeable number, because it can be changed into a prime (20754827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288226 + ... + 288297.

Almost surely, 2^20754828 is an apocalyptic number.

It is an amenable number.

20754828 is an abundant number, since it is smaller than the sum of its proper divisors (31708856).

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

20754828 is a wasteful number, since it uses less digits than its factorization.

20754828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576533 (or 576528 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 20754828 is about 4555.7467005970. The cubic root of 20754828 is about 274.8145438296.

It can be divided in two parts, 2075 and 4828, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 20754828 in words is "twenty million, seven hundred fifty-four thousand, eight hundred twenty-eight".