90720034 has 8 divisors (see below), whose sum is σ = 136793088. Its totient is φ = 45122340.

The previous prime is 90720029. The next prime is 90720059. The reversal of 90720034 is 43002709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×90720034² = 16460249137922312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90719990 and 90720008.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 118362 + ... + 119125.

It is an arithmetic number, because the mean of its divisors is an integer number (17099136).

Almost surely, 2^90720034 is an apocalyptic number.

90720034 is a deficient number, since it is larger than the sum of its proper divisors (46073054).

90720034 is a wasteful number, since it uses less digits than its factorization.

90720034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237680.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 90720034 is about 9524.7065046646. The cubic root of 90720034 is about 449.3323993666.

The spelling of 90720034 in words is "ninety million, seven hundred twenty thousand, thirty-four".