100780022 has 32 divisors (see below), whose sum is σ = 175785984. Its totient is φ = 42444000.

The previous prime is 100780021. The next prime is 100780033. The reversal of 100780022 is 220087001.

It is a super-2 number, since 2×100780022² = 20313225668640968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100779976 and 100780003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100780021) 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, 371747 + ... + 372017.

It is an arithmetic number, because the mean of its divisors is an integer number (5493312).

Almost surely, 2^100780022 is an apocalyptic number.

100780022 is a deficient number, since it is larger than the sum of its proper divisors (75005962).

100780022 is a wasteful number, since it uses less digits than its factorization.

100780022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 100780022 is about 10038.9253408918. The cubic root of 100780022 is about 465.3626061329.

The spelling of 100780022 in words is "one hundred million, seven hundred eighty thousand, twenty-two".