100051440 has 40 divisors (see below), whose sum is σ = 310160208. Its totient is φ = 26680320.

The previous prime is 100051423. The next prime is 100051447. The reversal of 100051440 is 44150001.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100051447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208201 + ... + 208680.

Almost surely, 2^100051440 is an apocalyptic number.

100051440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100051440 is an abundant number, since it is smaller than the sum of its proper divisors (210108768).

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

100051440 is a wasteful number, since it uses less digits than its factorization.

100051440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416897 (or 416891 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 100051440 is about 10002.5716693258. The cubic root of 100051440 is about 464.2384574951.

The spelling of 100051440 in words is "one hundred million, fifty-one thousand, four hundred forty".