90448140 has 24 divisors (see below), whose sum is σ = 253254960. Its totient is φ = 24119488.

The previous prime is 90448139. The next prime is 90448153. The reversal of 90448140 is 4184409.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 90448098 and 90448107.

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, 753675 + ... + 753794.

It is an arithmetic number, because the mean of its divisors is an integer number (10552290).

Almost surely, 2^90448140 is an apocalyptic number.

It is an amenable number.

90448140 is an abundant number, since it is smaller than the sum of its proper divisors (162806820).

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

90448140 is a wasteful number, since it uses less digits than its factorization.

90448140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507481 (or 1507479 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 90448140 is about 9510.4227035395. The cubic root of 90448140 is about 448.8830570955.

The spelling of 90448140 in words is "ninety million, four hundred forty-eight thousand, one hundred forty".