90428115 has 16 divisors (see below), whose sum is σ = 145497600. Its totient is φ = 47957472.

The previous prime is 90428113. The next prime is 90428131. The reversal of 90428115 is 51182409.

It is a happy number.

It is not a de Polignac number, because 90428115 - 2¹ = 90428113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90428113) 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, 14155 + ... + 19524.

It is an arithmetic number, because the mean of its divisors is an integer number (9093600).

Almost surely, 2^90428115 is an apocalyptic number.

90428115 is a deficient number, since it is larger than the sum of its proper divisors (55069485).

90428115 is a wasteful number, since it uses less digits than its factorization.

90428115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33866.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 90428115 is about 9509.3698529398. The cubic root of 90428115 is about 448.8499274417.

The spelling of 90428115 in words is "ninety million, four hundred twenty-eight thousand, one hundred fifteen".