749171500 has 288 divisors, whose sum is σ = 2161111680. Its totient is φ = 221760000.

The previous prime is 749171491. The next prime is 749171537. The reversal of 749171500 is 5171947.

It is a super-2 number, since 2×749171500² = 1122515872824500000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12281470 + ... + 12281530.

It is an arithmetic number, because the mean of its divisors is an integer number (7503860).

Almost surely, 2^749171500 is an apocalyptic number.

749171500 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749171500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1080555840).

749171500 is an abundant number, since it is smaller than the sum of its proper divisors (1411940180).

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

749171500 is a wasteful number, since it uses less digits than its factorization.

749171500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 749171500 is about 27370.9974242811. The cubic root of 749171500 is about 908.2256210595.

The spelling of 749171500 in words is "seven hundred forty-nine million, one hundred seventy-one thousand, five hundred".