40304208 has 40 divisors (see below), whose sum is σ = 118994368. Its totient is φ = 11515392.

The previous prime is 40304197. The next prime is 40304213. The reversal of 40304208 is 80240304.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59641 + ... + 60312.

Almost surely, 2^40304208 is an apocalyptic number.

40304208 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40304208 is an abundant number, since it is smaller than the sum of its proper divisors (78690160).

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

40304208 is a wasteful number, since it uses less digits than its factorization.

40304208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119971 (or 119965 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40304208 is about 6348.5595216553. The cubic root of 40304208 is about 342.8599813257.

The spelling of 40304208 in words is "forty million, three hundred four thousand, two hundred eight".