40790730 has 64 divisors (see below), whose sum is σ = 105504768. Its totient is φ = 10063680.

The previous prime is 40790723. The next prime is 40790741. The reversal of 40790730 is 3709704.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20437 + ... + 22343.

It is an arithmetic number, because the mean of its divisors is an integer number (1648512).

Almost surely, 2^40790730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40790730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52752384).

40790730 is an abundant number, since it is smaller than the sum of its proper divisors (64714038).

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

40790730 is a wasteful number, since it uses less digits than its factorization.

40790730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 40790730 is about 6386.7620904493. The cubic root of 40790730 is about 344.2340495286.

The spelling of 40790730 in words is "forty million, seven hundred ninety thousand, seven hundred thirty".