38453520 has 160 divisors (see below), whose sum is σ = 139419648. Its totient is φ = 8584704.

The previous prime is 38453497. The next prime is 38453521. The reversal of 38453520 is 2535483.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (38453521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78717 + ... + 79203.

Almost surely, 2^38453520 is an apocalyptic number.

38453520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38453520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69709824).

38453520 is an abundant number, since it is smaller than the sum of its proper divisors (100966128).

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

38453520 is a wasteful number, since it uses less digits than its factorization.

38453520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 38453520 is about 6201.0902267263. The cubic root of 38453520 is about 337.5297312628.

The spelling of 38453520 in words is "thirty-eight million, four hundred fifty-three thousand, five hundred twenty".