75047420 has 36 divisors (see below), whose sum is σ = 183332520. Its totient is φ = 25730208.

The previous prime is 75047419. The next prime is 75047429. The reversal of 75047420 is 2474057.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75047429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37310 + ... + 39269.

It is an arithmetic number, because the mean of its divisors is an integer number (5092570).

Almost surely, 2^75047420 is an apocalyptic number.

75047420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

75047420 is an abundant number, since it is smaller than the sum of its proper divisors (108285100).

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

75047420 is a wasteful number, since it uses less digits than its factorization.

75047420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76602 (or 76593 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 75047420 is about 8662.9914002035. The cubic root of 75047420 is about 421.8051929857.

The spelling of 75047420 in words is "seventy-five million, forty-seven thousand, four hundred twenty".