40229280 has 288 divisors, whose sum is σ = 169513344. Its totient is φ = 8460288.

The previous prime is 40229263. The next prime is 40229291. The reversal of 40229280 is 8292204.

It is a tau number, because it is divible by the number of its divisors (288).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130887 + ... + 131193.

It is an arithmetic number, because the mean of its divisors is an integer number (588588).

Almost surely, 2^40229280 is an apocalyptic number.

40229280 is a gapful number since it is divisible by the number (40) 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 40229280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84756672).

40229280 is an abundant number, since it is smaller than the sum of its proper divisors (129284064).

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

40229280 is a wasteful number, since it uses less digits than its factorization.

40229280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 40229280 is about 6342.6555952535. The cubic root of 40229280 is about 342.6473836007.

The spelling of 40229280 in words is "forty million, two hundred twenty-nine thousand, two hundred eighty".