101778046 has 8 divisors (see below), whose sum is σ = 156793320. Its totient is φ = 49513608.

The previous prime is 101778043. The next prime is 101778091. The reversal of 101778046 is 640877101.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101778043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687616 + ... + 687763.

It is an arithmetic number, because the mean of its divisors is an integer number (19599165).

Almost surely, 2^101778046 is an apocalyptic number.

101778046 is a deficient number, since it is larger than the sum of its proper divisors (55015274).

101778046 is a wasteful number, since it uses less digits than its factorization.

101778046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375418.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 101778046 is about 10088.5105937398. The cubic root of 101778046 is about 466.8937240874.

The spelling of 101778046 in words is "one hundred one million, seven hundred seventy-eight thousand, forty-six".