420794628 has 12 divisors (see below), whose sum is σ = 981854160. Its totient is φ = 140264872.

The previous prime is 420794623. The next prime is 420794641. The reversal of 420794628 is 826497024.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 420794628.

It is not an unprimeable number, because it can be changed into a prime (420794623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17533098 + ... + 17533121.

It is an arithmetic number, because the mean of its divisors is an integer number (81821180).

Almost surely, 2^420794628 is an apocalyptic number.

It is an amenable number.

420794628 is an abundant number, since it is smaller than the sum of its proper divisors (561059532).

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

420794628 is a wasteful number, since it uses less digits than its factorization.

420794628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35066226 (or 35066224 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 420794628 is about 20513.2793087795. The cubic root of 420794628 is about 749.3592322671.

The spelling of 420794628 in words is "four hundred twenty million, seven hundred ninety-four thousand, six hundred twenty-eight".