1628097750 has 96 divisors (see below), whose sum is σ = 4418590176. Its totient is φ = 432561600.

The previous prime is 1628097749. The next prime is 1628097767. The reversal of 1628097750 is 577908261.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1628097696 and 1628097705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 689572 + ... + 691928.

It is an arithmetic number, because the mean of its divisors is an integer number (46026981).

Almost surely, 2^1628097750 is an apocalyptic number.

1628097750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1628097750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2209295088).

1628097750 is an abundant number, since it is smaller than the sum of its proper divisors (2790492426).

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

1628097750 is a wasteful number, since it uses less digits than its factorization.

1628097750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687 (or 2674 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 1628097750 is about 40349.6933073846. The cubic root of 1628097750 is about 1176.4139308867.

The spelling of 1628097750 in words is "one billion, six hundred twenty-eight million, ninety-seven thousand, seven hundred fifty".