75709920 has 192 divisors, whose sum is σ = 280433664. Its totient is φ = 16926720.

The previous prime is 75709913. The next prime is 75709943. The reversal of 75709920 is 2990757.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68089 + ... + 69191.

It is an arithmetic number, because the mean of its divisors is an integer number (1460592).

Almost surely, 2^75709920 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 75709920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140216832).

75709920 is an abundant number, since it is smaller than the sum of its proper divisors (204723744).

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

75709920 is a wasteful number, since it uses less digits than its factorization.

75709920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 75709920 is about 8701.1447522725. The cubic root of 75709920 is about 423.0427556557.

The spelling of 75709920 in words is "seventy-five million, seven hundred nine thousand, nine hundred twenty".