78038011 has 8 divisors (see below), whose sum is σ = 82414080. Its totient is φ = 73743912.

The previous prime is 78038003. The next prime is 78038027. The reversal of 78038011 is 11083087.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78038011 - 2³ = 78038003 is a prime.

It is a super-2 number, since 2×78038011² = 12179862321672242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78038711) 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, 18531 + ... + 22348.

It is an arithmetic number, because the mean of its divisors is an integer number (10301760).

Almost surely, 2^78038011 is an apocalyptic number.

78038011 is a deficient number, since it is larger than the sum of its proper divisors (4376069).

78038011 is a wasteful number, since it uses less digits than its factorization.

78038011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40985.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 78038011 is about 8833.9125533367. The cubic root of 78038011 is about 427.3352620393.

The spelling of 78038011 in words is "seventy-eight million, thirty-eight thousand, eleven".