19740828 has 24 divisors (see below), whose sum is σ = 46271232. Its totient is φ = 6550384.

The previous prime is 19740817. The next prime is 19740839. The reversal of 19740828 is 82804791.

It is an interprime number because it is at equal distance from previous prime (19740817) and next prime (19740839).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900 + ... + 6347.

It is an arithmetic number, because the mean of its divisors is an integer number (1927968).

Almost surely, 2^19740828 is an apocalyptic number.

It is an amenable number.

19740828 is an abundant number, since it is smaller than the sum of its proper divisors (26530404).

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

19740828 is a wasteful number, since it uses less digits than its factorization.

19740828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7481 (or 7479 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 19740828 is about 4443.0651581988. The cubic root of 19740828 is about 270.2641584820.

The spelling of 19740828 in words is "nineteen million, seven hundred forty thousand, eight hundred twenty-eight".