90678234 has 16 divisors (see below), whose sum is σ = 181827360. Its totient is φ = 30147600.

The previous prime is 90678233. The next prime is 90678251. The reversal of 90678234 is 43287609.

90678234 = T₄₇₉ + T₄₈₀ + ... + T₈₆₇.

It is a junction number, because it is equal to n+sod(n) for n = 90678192 and 90678201.

It is not an unprimeable number, because it can be changed into a prime (90678233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17092 + ... + 21759.

It is an arithmetic number, because the mean of its divisors is an integer number (11364210).

Almost surely, 2^90678234 is an apocalyptic number.

90678234 is an abundant number, since it is smaller than the sum of its proper divisors (91149126).

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

90678234 is a wasteful number, since it uses less digits than its factorization.

90678234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39245.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 90678234 is about 9522.5119585118. The cubic root of 90678234 is about 449.2633775682.

The spelling of 90678234 in words is "ninety million, six hundred seventy-eight thousand, two hundred thirty-four".