1428325020 has 72 divisors (see below), whose sum is σ = 4336899840. Its totient is φ = 380507520.

The previous prime is 1428325013. The next prime is 1428325021. The reversal of 1428325020 is 205238241.

It is a super-2 number, since 2×1428325020² = 4080224725516000800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428325021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209221 + ... + 215939.

It is an arithmetic number, because the mean of its divisors is an integer number (60234720).

Almost surely, 2^1428325020 is an apocalyptic number.

1428325020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428325020 is an abundant number, since it is smaller than the sum of its proper divisors (2908574820).

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

1428325020 is a wasteful number, since it uses less digits than its factorization.

1428325020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7915 (or 7910 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 1428325020 is about 37793.1874813438. The cubic root of 1428325020 is about 1126.1831227229.

The spelling of 1428325020 in words is "one billion, four hundred twenty-eight million, three hundred twenty-five thousand, twenty".