46787940 has 36 divisors (see below), whose sum is σ = 141923964. Its totient is φ = 12476736.

The previous prime is 46787921. The next prime is 46787941. The reversal of 46787940 is 4978764.

It can be written as a sum of positive squares in 2 ways, for example, as 4875264 + 41912676 = 2208^2 + 6474^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×46787940² = 4378222658887200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (46787941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129787 + ... + 130146.

Almost surely, 2^46787940 is an apocalyptic number.

It is an amenable number.

46787940 is an abundant number, since it is smaller than the sum of its proper divisors (95136024).

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

46787940 is a wasteful number, since it uses less digits than its factorization.

46787940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259948 (or 259943 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 46787940 is about 6840.1710504928. The cubic root of 46787940 is about 360.3390324655.

The spelling of 46787940 in words is "forty-six million, seven hundred eighty-seven thousand, nine hundred forty".