90347940 has 48 divisors (see below), whose sum is σ = 281084160. Its totient is φ = 24092640.

The previous prime is 90347921. The next prime is 90347941. The reversal of 90347940 is 4974309.

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 = 90347895 and 90347904.

It is not an unprimeable number, because it can be changed into a prime (90347941) 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, 83116 + ... + 84195.

It is an arithmetic number, because the mean of its divisors is an integer number (5855920).

Almost surely, 2^90347940 is an apocalyptic number.

90347940 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90347940 is an abundant number, since it is smaller than the sum of its proper divisors (190736220).

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

90347940 is a wasteful number, since it uses less digits than its factorization.

90347940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167329 (or 167321 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 90347940 is about 9505.1533391103. The cubic root of 90347940 is about 448.7172357319.

The spelling of 90347940 in words is "ninety million, three hundred forty-seven thousand, nine hundred forty".