90901420 has 12 divisors (see below), whose sum is σ = 190893024. Its totient is φ = 36360560.

The previous prime is 90901411. The next prime is 90901423. The reversal of 90901420 is 2410909.

It is not an unprimeable number, because it can be changed into a prime (90901423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2272516 + ... + 2272555.

It is an arithmetic number, because the mean of its divisors is an integer number (15907752).

Almost surely, 2^90901420 is an apocalyptic number.

It is an amenable number.

90901420 is an abundant number, since it is smaller than the sum of its proper divisors (99991604).

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

90901420 is a wasteful number, since it uses less digits than its factorization.

90901420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545080 (or 4545078 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 90901420 is about 9534.2236181034. The cubic root of 90901420 is about 449.6316656712.

The spelling of 90901420 in words is "ninety million, nine hundred one thousand, four hundred twenty".