420455888 has 30 divisors (see below), whose sum is σ = 822951234. Its totient is φ = 208102848.

The previous prime is 420455863. The next prime is 420455923. The reversal of 420455888 is 888554024.

It can be written as a sum of positive squares in only one way, i.e., 359178304 + 61277584 = 18952^2 + 7828^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168506 + ... + 170982.

Almost surely, 2^420455888 is an apocalyptic number.

It is an amenable number.

420455888 is a deficient number, since it is larger than the sum of its proper divisors (402495346).

420455888 is a wasteful number, since it uses less digits than its factorization.

420455888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691 (or 2582 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 44.

The square root of 420455888 is about 20505.0210436371. The cubic root of 420455888 is about 749.1581000336.

The spelling of 420455888 in words is "four hundred twenty million, four hundred fifty-five thousand, eight hundred eighty-eight".