1588428 has 18 divisors (see below), whose sum is σ = 4015284. Its totient is φ = 529464.

The previous prime is 1588423. The next prime is 1588439. The reversal of 1588428 is 8248851.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1588428² = 5046207022368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 44123 = 1588428 / (1 + 5 + 8 + 8 + 4 + 2 + 8).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 1588392 and 1588401.

It is not an unprimeable number, because it can be changed into a prime (1588423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22026 + ... + 22097.

2^1588428 is an apocalyptic number.

1588428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1588428 is an abundant number, since it is smaller than the sum of its proper divisors (2426856).

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

1588428 is a wasteful number, since it uses less digits than its factorization.

1588428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44133 (or 44128 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 1588428 is about 1260.3285285988. The cubic root of 1588428 is about 116.6780542173.

It can be divided in two parts, 1588 and 428, that added together give a triangular number (2016 = T₆₃).

The spelling of 1588428 in words is "one million, five hundred eighty-eight thousand, four hundred twenty-eight".