101272730 has 16 divisors (see below), whose sum is σ = 196313544. Its totient is φ = 37392960.

The previous prime is 101272709. The next prime is 101272739. The reversal of 101272730 is 37272101.

It can be written as a sum of positive squares in 4 ways, for example, as 69338929 + 31933801 = 8327^2 + 5651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 101272696 and 101272705.

It is not an unprimeable number, because it can be changed into a prime (101272739) 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 7 ways as a sum of consecutive naturals, for example, 389381 + ... + 389640.

Almost surely, 2^101272730 is an apocalyptic number.

101272730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101272730 is a deficient number, since it is larger than the sum of its proper divisors (95040814).

101272730 is a wasteful number, since it uses less digits than its factorization.

101272730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779041.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 101272730 is about 10063.4352981474. The cubic root of 101272730 is about 466.1197510093.

The spelling of 101272730 in words is "one hundred one million, two hundred seventy-two thousand, seven hundred thirty".