75194420 has 54 divisors (see below), whose sum is σ = 184354758. Its totient is φ = 25687872.

The previous prime is 75194411. The next prime is 75194423. The reversal of 75194420 is 2449157.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 94864 + 75099556 = 308^2 + 8666^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75194423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 271322 + ... + 271598.

It is an arithmetic number, because the mean of its divisors is an integer number (3413977).

Almost surely, 2^75194420 is an apocalyptic number.

75194420 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 75194420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92177379).

75194420 is an abundant number, since it is smaller than the sum of its proper divisors (109160338).

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

75194420 is a wasteful number, since it uses less digits than its factorization.

75194420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 75194420 is about 8671.4716167442. The cubic root of 75194420 is about 422.0804186265.

The spelling of 75194420 in words is "seventy-five million, one hundred ninety-four thousand, four hundred twenty".