745220434 has 8 divisors (see below), whose sum is σ = 1277520768. Its totient is φ = 319380180.

The previous prime is 745220429. The next prime is 745220479. The reversal of 745220434 is 434022547.

It is a happy number.

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

It is a super-2 number, since 2×745220434² = 1110706990502296712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 745220396 and 745220405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26615002 + ... + 26615029.

It is an arithmetic number, because the mean of its divisors is an integer number (159690096).

Almost surely, 2^745220434 is an apocalyptic number.

745220434 is a deficient number, since it is larger than the sum of its proper divisors (532300334).

745220434 is a wasteful number, since it uses less digits than its factorization.

745220434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53230040.

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 745220434 is about 27298.7258677031. The cubic root of 745220434 is about 906.6261713880.

The spelling of 745220434 in words is "seven hundred forty-five million, two hundred twenty thousand, four hundred thirty-four".