493721028 has 24 divisors (see below), whose sum is σ = 1280017760. Its totient is φ = 164573640.

The previous prime is 493720999. The next prime is 493721029. The reversal of 493721028 is 820127394.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 493720983 and 493721001.

It is not an unprimeable number, because it can be changed into a prime (493721029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2285638 + ... + 2285853.

Almost surely, 2^493721028 is an apocalyptic number.

It is an amenable number.

493721028 is an abundant number, since it is smaller than the sum of its proper divisors (786296732).

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

493721028 is a wasteful number, since it uses less digits than its factorization.

493721028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571504 (or 4571496 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 493721028 is about 22219.8341127921. The cubic root of 493721028 is about 790.3641049805.

The spelling of 493721028 in words is "four hundred ninety-three million, seven hundred twenty-one thousand, twenty-eight".