75478940 has 12 divisors (see below), whose sum is σ = 158505816. Its totient is φ = 30191568.

The previous prime is 75478937. The next prime is 75478951. The reversal of 75478940 is 4987457.

It is a junction number, because it is equal to n+sod(n) for n = 75478891 and 75478900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1886954 + ... + 1886993.

It is an arithmetic number, because the mean of its divisors is an integer number (13208818).

Almost surely, 2^75478940 is an apocalyptic number.

It is an amenable number.

75478940 is an abundant number, since it is smaller than the sum of its proper divisors (83026876).

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

75478940 is a wasteful number, since it uses less digits than its factorization.

75478940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773956 (or 3773954 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 75478940 is about 8687.8616471489. The cubic root of 75478940 is about 422.6121033479.

The spelling of 75478940 in words is "seventy-five million, four hundred seventy-eight thousand, nine hundred forty".