78028072 has 16 divisors (see below), whose sum is σ = 146950560. Its totient is φ = 38841264.

The previous prime is 78028039. The next prime is 78028073. The reversal of 78028072 is 27082087.

It is not an unprimeable number, because it can be changed into a prime (78028073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19668 + ... + 23299.

It is an arithmetic number, because the mean of its divisors is an integer number (9184410).

Almost surely, 2^78028072 is an apocalyptic number.

It is an amenable number.

78028072 is a deficient number, since it is larger than the sum of its proper divisors (68922488).

78028072 is a wasteful number, since it uses less digits than its factorization.

78028072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43200 (or 43196 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 78028072 is about 8833.3499874057. The cubic root of 78028072 is about 427.3171193187.

The spelling of 78028072 in words is "seventy-eight million, twenty-eight thousand, seventy-two".