40280652 has 72 divisors (see below), whose sum is σ = 109309200. Its totient is φ = 12954816.

The previous prime is 40280641. The next prime is 40280663. The reversal of 40280652 is 25608204.

40280652 is a `hidden beast` number, since 4 + 0 + 2 + 8 + 0 + 652 = 666.

It is an interprime number because it is at equal distance from previous prime (40280641) and next prime (40280663).

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

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 23 ways as a sum of consecutive naturals, for example, 27474 + ... + 28902.

Almost surely, 2^40280652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40280652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54654600).

40280652 is an abundant number, since it is smaller than the sum of its proper divisors (69028548).

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

40280652 is a wasteful number, since it uses less digits than its factorization.

40280652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1463 counting only the distinct ones).

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

The square root of 40280652 is about 6346.7040265007. The cubic root of 40280652 is about 342.7931728867.

Adding to 40280652 its reverse (25608204), we get a palindrome (65888856).

The spelling of 40280652 in words is "forty million, two hundred eighty thousand, six hundred fifty-two".