90703030 has 32 divisors (see below), whose sum is σ = 185856768. Its totient is φ = 31548000.

The previous prime is 90703027. The next prime is 90703031. The reversal of 90703030 is 3030709.

It is a Harshad number since it is a multiple of its sum of digits (22).

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

It is a junction number, because it is equal to n+sod(n) for n = 90702992 and 90703010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90703031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15396 + ... + 20455.

It is an arithmetic number, because the mean of its divisors is an integer number (5808024).

Almost surely, 2^90703030 is an apocalyptic number.

90703030 is an abundant number, since it is smaller than the sum of its proper divisors (95153738).

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

90703030 is a wasteful number, since it uses less digits than its factorization.

90703030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35892.

The product of its (nonzero) digits is 567, while the sum is 22.

The square root of 90703030 is about 9523.8138369038. The cubic root of 90703030 is about 449.3043242540.

Adding to 90703030 its reverse (3030709), we get a palindrome (93733739).

It can be divided in two parts, 9070 and 3030, that added together give a square (12100 = 110²).

The spelling of 90703030 in words is "ninety million, seven hundred three thousand, thirty".