40770290 has 32 divisors (see below), whose sum is σ = 80403840. Its totient is φ = 14761600.

The previous prime is 40770271. The next prime is 40770299. The reversal of 40770290 is 9207704.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40770299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30251 + ... + 31569.

It is an arithmetic number, because the mean of its divisors is an integer number (2512620).

Almost surely, 2^40770290 is an apocalyptic number.

40770290 is a deficient number, since it is larger than the sum of its proper divisors (39633550).

40770290 is a wasteful number, since it uses less digits than its factorization.

40770290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 40770290 is about 6385.1617050784. The cubic root of 40770290 is about 344.1765420218.

Adding to 40770290 its reverse (9207704), we get a palindrome (49977994).

The spelling of 40770290 in words is "forty million, seven hundred seventy thousand, two hundred ninety".