38473440 has 48 divisors (see below), whose sum is σ = 121192848. Its totient is φ = 10259456.

The previous prime is 38473429. The next prime is 38473453. The reversal of 38473440 is 4437483.

It is a tau number, because it is divible by the number of its divisors (48).

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, 39597 + ... + 40556.

It is an arithmetic number, because the mean of its divisors is an integer number (2524851).

Almost surely, 2^38473440 is an apocalyptic number.

38473440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38473440 is an abundant number, since it is smaller than the sum of its proper divisors (82719408).

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

38473440 is a wasteful number, since it uses less digits than its factorization.

38473440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80171 (or 80163 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 38473440 is about 6202.6961879492. The cubic root of 38473440 is about 337.5880044853.

The spelling of 38473440 in words is "thirty-eight million, four hundred seventy-three thousand, four hundred forty".