90745470 has 96 divisors (see below), whose sum is σ = 243453600. Its totient is φ = 23443200.

The previous prime is 90745469. The next prime is 90745471. The reversal of 90745470 is 7454709.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90745469) and next prime (90745471).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90745471) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 608956 + ... + 609104.

It is an arithmetic number, because the mean of its divisors is an integer number (2535975).

Almost surely, 2^90745470 is an apocalyptic number.

90745470 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 90745470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121726800).

90745470 is an abundant number, since it is smaller than the sum of its proper divisors (152708130).

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

90745470 is a wasteful number, since it uses less digits than its factorization.

90745470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 90745470 is about 9526.0416753235. The cubic root of 90745470 is about 449.3743899112.

The spelling of 90745470 in words is "ninety million, seven hundred forty-five thousand, four hundred seventy".