101796890 has 32 divisors (see below), whose sum is σ = 199308816. Its totient is φ = 37209600.

The previous prime is 101796887. The next prime is 101796899. The reversal of 101796890 is 98697101.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 86359849 + 15437041 = 9293^2 + 3929^2 .

It is not an unprimeable number, because it can be changed into a prime (101796899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9254 + ... + 17006.

Almost surely, 2^101796890 is an apocalyptic number.

101796890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101796890 is a deficient number, since it is larger than the sum of its proper divisors (97511926).

101796890 is a wasteful number, since it uses less digits than its factorization.

101796890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7874.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 101796890 is about 10089.4444842122. Note that the first 4 decimals coincide. The cubic root of 101796890 is about 466.9225371198.

The spelling of 101796890 in words is "one hundred one million, seven hundred ninety-six thousand, eight hundred ninety".