38154240 has 260 divisors, whose sum is σ = 142719984. Its totient is φ = 9732096.

The previous prime is 38154197. The next prime is 38154241. The reversal of 38154240 is 4245183.

38154240 is a `hidden beast` number, since 3 + 81 + 542 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (38154241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1658869 + ... + 1658891.

Almost surely, 2^38154240 is an apocalyptic number.

38154240 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 38154240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71359992).

38154240 is an abundant number, since it is smaller than the sum of its proper divisors (104565744).

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

38154240 is an equidigital number, since it uses as much as digits as its factorization.

38154240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 33 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 38154240 is about 6176.9118497838. The cubic root of 38154240 is about 336.6517960080.

The spelling of 38154240 in words is "thirty-eight million, one hundred fifty-four thousand, two hundred forty".