1672426128 has 80 divisors (see below), whose sum is σ = 4398704576. Its totient is φ = 547430400.

The previous prime is 1672426123. The next prime is 1672426199. The reversal of 1672426128 is 8216242761.

It is a super-3 number, since 3×1672426128³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1672426123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1391928 + ... + 1393128.

Almost surely, 2^1672426128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1672426128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2199352288).

1672426128 is an abundant number, since it is smaller than the sum of its proper divisors (2726278448).

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

1672426128 is a wasteful number, since it uses less digits than its factorization.

1672426128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712 (or 1706 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 1672426128 is about 40895.3069190097. The cubic root of 1672426128 is about 1186.9952506454.

Adding to 1672426128 its reverse (8216242761), we get a palindrome (9888668889).

The spelling of 1672426128 in words is "one billion, six hundred seventy-two million, four hundred twenty-six thousand, one hundred twenty-eight".