40147488 has 84 divisors (see below), whose sum is σ = 118575198. Its totient is φ = 13374720.

The previous prime is 40147483. The next prime is 40147493. The reversal of 40147488 is 88474104.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40147483) and next prime (40147493).

It can be written as a sum of positive squares in only one way, i.e., 30338064 + 9809424 = 5508^2 + 3132^2 .

It is a super-2 number, since 2×40147488² = 3223641585420288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40147483) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 22468 + ... + 24188.

Almost surely, 2^40147488 is an apocalyptic number.

40147488 is a gapful number since it is divisible by the number (48) 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 40147488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59287599).

40147488 is an abundant number, since it is smaller than the sum of its proper divisors (78427710).

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

40147488 is an equidigital number, since it uses as much as digits as its factorization.

40147488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 40147488 is about 6336.2045421530. The cubic root of 40147488 is about 342.4150086588.

The spelling of 40147488 in words is "forty million, one hundred forty-seven thousand, four hundred eighty-eight".