40232390 has 16 divisors (see below), whose sum is σ = 79002000. Its totient is φ = 14629920.

The previous prime is 40232383. The next prime is 40232411. The reversal of 40232390 is 9323204.

It is a super-2 number, since 2×40232390² = 3237290410224200, which contains 22 as substring.

It is a congruent number.

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, 182765 + ... + 182984.

It is an arithmetic number, because the mean of its divisors is an integer number (4937625).

Almost surely, 2^40232390 is an apocalyptic number.

40232390 is a deficient number, since it is larger than the sum of its proper divisors (38769610).

40232390 is a wasteful number, since it uses less digits than its factorization.

40232390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365767.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 40232390 is about 6342.9007559633. The cubic root of 40232390 is about 342.6562130395.

Adding to 40232390 its reverse (9323204), we get a palindrome (49555594).

The spelling of 40232390 in words is "forty million, two hundred thirty-two thousand, three hundred ninety".