264026390 has 16 divisors (see below), whose sum is σ = 484215408. Its totient is φ = 103617696.

The previous prime is 264026387. The next prime is 264026393. The reversal of 264026390 is 93620462.

It is an interprime number because it is at equal distance from previous prime (264026387) and next prime (264026393).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264026393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248552 + ... + 249611.

It is an arithmetic number, because the mean of its divisors is an integer number (30263463).

Almost surely, 2^264026390 is an apocalyptic number.

264026390 is a deficient number, since it is larger than the sum of its proper divisors (220189018).

264026390 is a wasteful number, since it uses less digits than its factorization.

264026390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498223.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 264026390 is about 16248.8888850900. Note that the first 5 decimals coincide. The cubic root of 264026390 is about 641.5282407493.

The spelling of 264026390 in words is "two hundred sixty-four million, twenty-six thousand, three hundred ninety".