46990640 has 40 divisors (see below), whose sum is σ = 110805408. Its totient is φ = 18529280.

The previous prime is 46990639. The next prime is 46990673. The reversal of 46990640 is 4609964.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 46990594 and 46990603.

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, 1544 + ... + 9816.

Almost surely, 2^46990640 is an apocalyptic number.

46990640 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 46990640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55402704).

46990640 is an abundant number, since it is smaller than the sum of its proper divisors (63814768).

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

46990640 is a wasteful number, since it uses less digits than its factorization.

46990640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8357 (or 8351 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 46990640 is about 6854.9719182503. The cubic root of 46990640 is about 360.8586499609.

The spelling of 46990640 in words is "forty-six million, nine hundred ninety thousand, six hundred forty".