420110028 has 36 divisors (see below), whose sum is σ = 1143634128. Its totient is φ = 129264480.

The previous prime is 420110027. The next prime is 420110029. The reversal of 420110028 is 820011024.

It is an interprime number because it is at equal distance from previous prime (420110027) and next prime (420110029).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (420110021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 448368 + ... + 449303.

Almost surely, 2^420110028 is an apocalyptic number.

It is an amenable number.

420110028 is an abundant number, since it is smaller than the sum of its proper divisors (723524100).

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

420110028 is a wasteful number, since it uses less digits than its factorization.

420110028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897694 (or 897689 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 420110028 is about 20496.5857644633. The cubic root of 420110028 is about 748.9526286987.

The spelling of 420110028 in words is "four hundred twenty million, one hundred ten thousand, twenty-eight".