40700840 has 32 divisors (see below), whose sum is σ = 92205000. Its totient is φ = 16168704.

The previous prime is 40700827. The next prime is 40700867. The reversal of 40700840 is 4800704.

It can be written as a sum of positive squares in 4 ways, for example, as 25381444 + 15319396 = 5038^2 + 3914^2 .

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, 2546 + ... + 9374.

Almost surely, 2^40700840 is an apocalyptic number.

40700840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40700840 is an abundant number, since it is smaller than the sum of its proper divisors (51504160).

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

40700840 is a wasteful number, since it uses less digits than its factorization.

40700840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989 (or 6985 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 40700840 is about 6379.7209970343. The cubic root of 40700840 is about 343.9810021958.

The spelling of 40700840 in words is "forty million, seven hundred thousand, eight hundred forty".