40288770 has 48 divisors (see below), whose sum is σ = 105089400. Its totient is φ = 10708992.

The previous prime is 40288769. The next prime is 40288771. The reversal of 40288770 is 7788204.

It is an interprime number because it is at equal distance from previous prime (40288769) and next prime (40288771).

It can be written as a sum of positive squares in 4 ways, for example, as 38601369 + 1687401 = 6213^2 + 1299^2 .

It is a super-2 number, since 2×40288770² = 3246369976225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40288771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39912 + ... + 40908.

Almost surely, 2^40288770 is an apocalyptic number.

40288770 is an abundant number, since it is smaller than the sum of its proper divisors (64800630).

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

40288770 is a wasteful number, since it uses less digits than its factorization.

40288770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459 (or 1456 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 40288770 is about 6347.3435388358. The cubic root of 40288770 is about 342.8161997240.

The spelling of 40288770 in words is "forty million, two hundred eighty-eight thousand, seven hundred seventy".