40301690 has 32 divisors (see below), whose sum is σ = 85228416. Its totient is φ = 13527360.

The previous prime is 40301689. The next prime is 40301693. The reversal of 40301690 is 9610304.

It is a super-2 number, since 2×40301690² = 3248452433712200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40301693) 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, 12662 + ... + 15521.

It is an arithmetic number, because the mean of its divisors is an integer number (2663388).

Almost surely, 2^40301690 is an apocalyptic number.

40301690 is an abundant number, since it is smaller than the sum of its proper divisors (44926726).

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

40301690 is a wasteful number, since it uses less digits than its factorization.

40301690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28214.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 40301690 is about 6348.3612058546. The cubic root of 40301690 is about 342.8528411332.

Adding to 40301690 its reverse (9610304), we get a palindrome (49911994).

The spelling of 40301690 in words is "forty million, three hundred one thousand, six hundred ninety".