101003640 has 32 divisors (see below), whose sum is σ = 303011280. Its totient is φ = 26934272.

The previous prime is 101003627. The next prime is 101003659. The reversal of 101003640 is 46300101.

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

It is a congruent number.

It is an unprimeable number.

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, 420729 + ... + 420968.

Almost surely, 2^101003640 is an apocalyptic number.

101003640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101003640 is an abundant number, since it is smaller than the sum of its proper divisors (202007640).

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

101003640 is a wasteful number, since it uses less digits than its factorization.

101003640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841711 (or 841707 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 101003640 is about 10050.0567162579. The cubic root of 101003640 is about 465.7065452725.

Adding to 101003640 its reverse (46300101), we get a palindrome (147303741).

The spelling of 101003640 in words is "one hundred one million, three thousand, six hundred forty".