78750472 has 8 divisors (see below), whose sum is σ = 147657150. Its totient is φ = 39375232.

The previous prime is 78750461. The next prime is 78750473. The reversal of 78750472 is 27405787.

It can be written as a sum of positive squares in only one way, i.e., 64416676 + 14333796 = 8026^2 + 3786^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (78750473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4921897 + ... + 4921912.

Almost surely, 2^78750472 is an apocalyptic number.

It is an amenable number.

78750472 is a deficient number, since it is larger than the sum of its proper divisors (68906678).

78750472 is a wasteful number, since it uses less digits than its factorization.

78750472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9843815 (or 9843811 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 78750472 is about 8874.1462687968. The cubic root of 78750472 is about 428.6318004687.

The spelling of 78750472 in words is "seventy-eight million, seven hundred fifty thousand, four hundred seventy-two".