45431390 has 8 divisors (see below), whose sum is σ = 81776520. Its totient is φ = 18172552.

The previous prime is 45431389. The next prime is 45431401. The reversal of 45431390 is 9313454.

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

It is a super-2 number, since 2×45431390² = 4128022394664200, which contains 22 as substring.

It is a congruent number.

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, 2271560 + ... + 2271579.

It is an arithmetic number, because the mean of its divisors is an integer number (10222065).

Almost surely, 2^45431390 is an apocalyptic number.

45431390 is a deficient number, since it is larger than the sum of its proper divisors (36345130).

45431390 is a wasteful number, since it uses less digits than its factorization.

45431390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4543146.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 45431390 is about 6740.2811514061. The cubic root of 45431390 is about 356.8223163581.

The spelling of 45431390 in words is "forty-five million, four hundred thirty-one thousand, three hundred ninety".