428020002 has 24 divisors (see below), whose sum is σ = 936384384. Its totient is φ = 141287544.

The previous prime is 428019983. The next prime is 428020013. The reversal of 428020002 is 200020824.

It is a super-2 number, since 2×428020002² = 366402244224160008, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113578 + ... + 117285.

It is an arithmetic number, because the mean of its divisors is an integer number (39016016).

Almost surely, 2^428020002 is an apocalyptic number.

428020002 is an abundant number, since it is smaller than the sum of its proper divisors (508364382).

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

428020002 is a wasteful number, since it uses less digits than its factorization.

428020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230974 (or 230971 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 428020002 is about 20688.6442765107. The cubic root of 428020002 is about 753.6239438381.

Adding to 428020002 its reverse (200020824), we get a palindrome (628040826).

The spelling of 428020002 in words is "four hundred twenty-eight million, twenty thousand, two".