46239840 has 144 divisors (see below), whose sum is σ = 159567408. Its totient is φ = 12192768.

The previous prime is 46239793. The next prime is 46239857. The reversal of 46239840 is 4893264.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 46239795 and 46239804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234622 + ... + 234818.

It is an arithmetic number, because the mean of its divisors is an integer number (1108107).

Almost surely, 2^46239840 is an apocalyptic number.

46239840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 46239840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79783704).

46239840 is an abundant number, since it is smaller than the sum of its proper divisors (113327568).

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

46239840 is a wasteful number, since it uses less digits than its factorization.

46239840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 46239840 is about 6799.9882352839. The cubic root of 46239840 is about 358.9264312849.

The spelling of 46239840 in words is "forty-six million, two hundred thirty-nine thousand, eight hundred forty".