40289274 has 48 divisors (see below), whose sum is σ = 91113984. Its totient is φ = 12852000.

The previous prime is 40289267. The next prime is 40289297. The reversal of 40289274 is 47298204.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57124 + ... + 57824.

It is an arithmetic number, because the mean of its divisors is an integer number (1898208).

Almost surely, 2^40289274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40289274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45556992).

40289274 is an abundant number, since it is smaller than the sum of its proper divisors (50824710).

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

40289274 is a wasteful number, since it uses less digits than its factorization.

40289274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 40289274 is about 6347.3832403598. The cubic root of 40289274 is about 342.8176292261.

It can be divided in two parts, 402 and 89274, that added together give a triangular number (89676 = T₄₂₃).

The spelling of 40289274 in words is "forty million, two hundred eighty-nine thousand, two hundred seventy-four".