38723040 has 72 divisors (see below), whose sum is σ = 132147288. Its totient is φ = 10325760.

The previous prime is 38723023. The next prime is 38723051. The reversal of 38723040 is 4032783.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 38722995 and 38723013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12006 + ... + 14885.

It is an arithmetic number, because the mean of its divisors is an integer number (1835379).

Almost surely, 2^38723040 is an apocalyptic number.

38723040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38723040 is an abundant number, since it is smaller than the sum of its proper divisors (93424248).

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

38723040 is a wasteful number, since it uses less digits than its factorization.

38723040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26912 (or 26901 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 38723040 is about 6222.7839428989. The cubic root of 38723040 is about 338.3164758736.

The spelling of 38723040 in words is "thirty-eight million, seven hundred twenty-three thousand, forty".