75149790 has 32 divisors (see below), whose sum is σ = 180904320. Its totient is φ = 19979424.

The previous prime is 75149783. The next prime is 75149791. The reversal of 75149790 is 9794157.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75149791) 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, 6801 + ... + 14019.

It is an arithmetic number, because the mean of its divisors is an integer number (5653260).

Almost surely, 2^75149790 is an apocalyptic number.

75149790 is an abundant number, since it is smaller than the sum of its proper divisors (105754530).

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

75149790 is a wasteful number, since it uses less digits than its factorization.

75149790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7576.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 75149790 is about 8668.8978538220. The cubic root of 75149790 is about 421.9968965728.

The spelling of 75149790 in words is "seventy-five million, one hundred forty-nine thousand, seven hundred ninety".