71499120 has 320 divisors, whose sum is σ = 285410304. Its totient is φ = 14376960.

The previous prime is 71499097. The next prime is 71499139. The reversal of 71499120 is 2199417.

It is a super-2 number, since 2×71499120² = 10224248321548800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 979404 + ... + 979476.

Almost surely, 2^71499120 is an apocalyptic number.

71499120 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 71499120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142705152).

71499120 is an abundant number, since it is smaller than the sum of its proper divisors (213911184).

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

71499120 is a wasteful number, since it uses less digits than its factorization.

71499120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 71499120 is about 8455.7152269929. The cubic root of 71499120 is about 415.0498222470.

The spelling of 71499120 in words is "seventy-one million, four hundred ninety-nine thousand, one hundred twenty".