100380438 has 32 divisors (see below), whose sum is σ = 227819520. Its totient is φ = 32747400.

The previous prime is 100380437. The next prime is 100380451. The reversal of 100380438 is 834083001.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100380437) 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, 17238 + ... + 22313.

It is an arithmetic number, because the mean of its divisors is an integer number (7119360).

Almost surely, 2^100380438 is an apocalyptic number.

100380438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

100380438 is an abundant number, since it is smaller than the sum of its proper divisors (127439082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100380438 is a wasteful number, since it uses less digits than its factorization.

100380438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39609 (or 39603 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 100380438 is about 10019.0038426981. The cubic root of 100380438 is about 464.7467507576.

The spelling of 100380438 in words is "one hundred million, three hundred eighty thousand, four hundred thirty-eight".