420028472 has 64 divisors (see below), whose sum is σ = 835591680. Its totient is φ = 197713152.

The previous prime is 420028463. The next prime is 420028481. The reversal of 420028472 is 274820024.

It is an interprime number because it is at equal distance from previous prime (420028463) and next prime (420028481).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1341788 + ... + 1342100.

It is an arithmetic number, because the mean of its divisors is an integer number (13056120).

Almost surely, 2^420028472 is an apocalyptic number.

It is an amenable number.

420028472 is a deficient number, since it is larger than the sum of its proper divisors (415563208).

420028472 is a wasteful number, since it uses less digits than its factorization.

420028472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 420028472 is about 20494.5961658189. The cubic root of 420028472 is about 748.9041608136.

Adding to 420028472 its reverse (274820024), we get a palindrome (694848496).

The spelling of 420028472 in words is "four hundred twenty million, twenty-eight thousand, four hundred seventy-two".