78051790 has 16 divisors (see below), whose sum is σ = 141886080. Its totient is φ = 30911200.

The previous prime is 78051767. The next prime is 78051797. The reversal of 78051790 is 9715087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78051797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37630 + ... + 39649.

It is an arithmetic number, because the mean of its divisors is an integer number (8867880).

Almost surely, 2^78051790 is an apocalyptic number.

78051790 is a deficient number, since it is larger than the sum of its proper divisors (63834290).

78051790 is a wasteful number, since it uses less digits than its factorization.

78051790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77387.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 78051790 is about 8834.6924111709. The cubic root of 78051790 is about 427.3604117750.

The spelling of 78051790 in words is "seventy-eight million, fifty-one thousand, seven hundred ninety".