100400032 has 24 divisors (see below), whose sum is σ = 197920800. Its totient is φ = 50134464.

The previous prime is 100400023. The next prime is 100400033. The reversal of 100400032 is 230004001.

It is a junction number, because it is equal to n+sod(n) for n = 100399991 and 100400018.

It is not an unprimeable number, because it can be changed into a prime (100400033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31069 + ... + 34147.

It is an arithmetic number, because the mean of its divisors is an integer number (8246700).

Almost surely, 2^100400032 is an apocalyptic number.

It is an amenable number.

100400032 is a deficient number, since it is larger than the sum of its proper divisors (97520768).

100400032 is a wasteful number, since it uses less digits than its factorization.

100400032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108 (or 4100 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 100400032 is about 10019.9816367097. The cubic root of 100400032 is about 464.7769879086.

Adding to 100400032 its reverse (230004001), we get a palindrome (330404033).

The spelling of 100400032 in words is "one hundred million, four hundred thousand, thirty-two".