78037090 has 8 divisors (see below), whose sum is σ = 140466780. Its totient is φ = 31214832.

The previous prime is 78037087. The next prime is 78037103. The reversal of 78037090 is 9073087.

It can be written as a sum of positive squares in 2 ways, for example, as 77951241 + 85849 = 8829^2 + 293^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 3901845 + ... + 3901864.

Almost surely, 2^78037090 is an apocalyptic number.

78037090 is a deficient number, since it is larger than the sum of its proper divisors (62429690).

78037090 is a wasteful number, since it uses less digits than its factorization.

78037090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7803716.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 78037090 is about 8833.8604245256. The cubic root of 78037090 is about 427.3335809042. Note that the first 3 decimals are identical.

The spelling of 78037090 in words is "seventy-eight million, thirty-seven thousand, ninety".